diff --git a/README.md b/README.md
index d9a5c0e..d06fe36 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ If you don't have YunoHost, please see [here](https://yunohost.org/#/install) to
 streaming application and file manager allowing you to access your 
 music & videos from anywhere, using almost any internet enabled device.
 
-**Shipped version:** 3.9.0
+**Shipped version:** 4.1.1.1
 
 ## Screenshots
 
diff --git a/check_process b/check_process
index cbba2de..ddc484f 100644
--- a/check_process
+++ b/check_process
@@ -12,12 +12,14 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
-		upgrade=1	from_commit=11caf9791c48fdcd632193a1c82ea52d4819b328
 		backup_restore=1
 		multi_instance=1
-		incorrect_path=1
+		# This test is no longer necessary since the version 2.7 (PR: https://github.com/YunoHost/yunohost/pull/304), you can still do it if your app could be installed with this version.
+		# incorrect_path=1
+		port_already_use=0
 		change_url=1
 ;;; Levels
+	# If the level 5 (Package linter) is forced to 1. Please add justifications here.
 	Level 5=auto
 ;;; Options
 Email=aymhce@gmail.com
diff --git a/conf/admin.sql b/conf/admin.sql
index 050f1e3..0485295 100644
--- a/conf/admin.sql
+++ b/conf/admin.sql
@@ -1,4 +1,4 @@
-INSERT INTO user(id,username,fullname,access) VALUES("", "__ADMIN__", "__ADMIN__", "100");
+INSERT INTO user(id,username,fullname,access) VALUES(NULL, "__ADMIN__", "__ADMIN__", "100");
 
 UPDATE `user_preference` SET `value` = 'en_US' WHERE `preference` = 31 ;
 
diff --git a/conf/app.src b/conf/app.src
index 1867c90..0d2dafa 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/ampache/ampache/archive/3.9.0.tar.gz
-SOURCE_SUM=1e523b52c6402693102dac183d7597d6e0aebf63580167f45661d0f15f57c072
+SOURCE_URL=https://github.com/ampache/ampache/archive/f9ea16e7fc7a36636180241dc79f139b92bc8ff0.tar.gz
+SOURCE_SUM=9cee154350b3b747b4ec6d405be768e8a3b0b1f0331a9f373c6a7c54c51f4775
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 7f2ea52..8171468 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -17,7 +17,8 @@ location __PATH__/ {
 	try_files $uri $uri/ index.php;
 	location ~ [^/]\.php(/|$) {
 		fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-		fastcgi_pass unix:/var/run/php/php7.0-fpm-__NAME__.sock;
+		fastcgi_pass unix:/var/run/php/php__PHPVERSION__-fpm-__NAME__.sock;
+
 		fastcgi_index index.php;
 		include fastcgi_params;
 		fastcgi_param REMOTE_USER $remote_user;
diff --git a/conf/php-fpm.conf b/conf/php-fpm.conf
deleted file mode 100644
index ab5dca9..0000000
--- a/conf/php-fpm.conf
+++ /dev/null
@@ -1,430 +0,0 @@
-; Start a new pool named 'www'.
-; the variable $pool can be used in any directive and will be replaced by the
-; pool name ('www' here)
-[__NAMETOCHANGE__]
-
-; Per pool prefix
-; It only applies on the following directives:
-; - 'access.log'
-; - 'slowlog'
-; - 'listen' (unixsocket)
-; - 'chroot'
-; - 'chdir'
-; - 'php_values'
-; - 'php_admin_values'
-; When not set, the global prefix (or /usr) applies instead.
-; Note: This directive can also be relative to the global prefix.
-; Default Value: none
-;prefix = /path/to/pools/$pool
-
-; Unix user/group of processes
-; Note: The user is mandatory. If the group is not set, the default user's group
-;       will be used.
-user = __USER__
-group = __USER__
-
-; The address on which to accept FastCGI requests.
-; Valid syntaxes are:
-;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific IPv4 address on
-;                            a specific port;
-;   '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific IPv6 address on
-;                            a specific port;
-;   'port'                 - to listen on a TCP socket to all addresses
-;                            (IPv6 and IPv4-mapped) on a specific port;
-;   '/path/to/unix/socket' - to listen on a unix socket.
-; Note: This value is mandatory.
-listen = /var/run/php/php7.0-fpm-__NAMETOCHANGE__.sock
-
-; Set listen(2) backlog.
-; Default Value: 511 (-1 on FreeBSD and OpenBSD)
-;listen.backlog = 511
-
-; Set permissions for unix socket, if one is used. In Linux, read/write
-; permissions must be set in order to allow connections from a web server. Many
-; BSD-derived systems allow connections regardless of permissions.
-; Default Values: user and group are set as the running user
-;                 mode is set to 0660
-listen.owner = www-data
-listen.group = www-data
-;listen.mode = 0660
-; When POSIX Access Control Lists are supported you can set them using
-; these options, value is a comma separated list of user/group names.
-; When set, listen.owner and listen.group are ignored
-;listen.acl_users =
-;listen.acl_groups =
-
-; List of addresses (IPv4/IPv6) of FastCGI clients which are allowed to connect.
-; Equivalent to the FCGI_WEB_SERVER_ADDRS environment variable in the original
-; PHP FCGI (5.2.2+). Makes sense only with a tcp listening socket. Each address
-; must be separated by a comma. If this value is left blank, connections will be
-; accepted from any ip address.
-; Default Value: any
-;listen.allowed_clients = 127.0.0.1
-
-; Specify the nice(2) priority to apply to the pool processes (only if set)
-; The value can vary from -19 (highest priority) to 20 (lower priority)
-; Note: - It will only work if the FPM master process is launched as root
-;       - The pool processes will inherit the master process priority
-;         unless it specified otherwise
-; Default Value: no set
-; process.priority = -19
-
-; Set the process dumpable flag (PR_SET_DUMPABLE prctl) even if the process user
-; or group is differrent than the master process user. It allows to create process
-; core dump and ptrace the process for the pool user.
-; Default Value: no
-; process.dumpable = yes
-
-; Choose how the process manager will control the number of child processes.
-; Possible Values:
-;   static  - a fixed number (pm.max_children) of child processes;
-;   dynamic - the number of child processes are set dynamically based on the
-;             following directives. With this process management, there will be
-;             always at least 1 children.
-;             pm.max_children      - the maximum number of children that can
-;                                    be alive at the same time.
-;             pm.start_servers     - the number of children created on startup.
-;             pm.min_spare_servers - the minimum number of children in 'idle'
-;                                    state (waiting to process). If the number
-;                                    of 'idle' processes is less than this
-;                                    number then some children will be created.
-;             pm.max_spare_servers - the maximum number of children in 'idle'
-;                                    state (waiting to process). If the number
-;                                    of 'idle' processes is greater than this
-;                                    number then some children will be killed.
-;  ondemand - no children are created at startup. Children will be forked when
-;             new requests will connect. The following parameter are used:
-;             pm.max_children           - the maximum number of children that
-;                                         can be alive at the same time.
-;             pm.process_idle_timeout   - The number of seconds after which
-;                                         an idle process will be killed.
-; Note: This value is mandatory.
-pm = dynamic
-
-; The number of child processes to be created when pm is set to 'static' and the
-; maximum number of child processes when pm is set to 'dynamic' or 'ondemand'.
-; This value sets the limit on the number of simultaneous requests that will be
-; served. Equivalent to the ApacheMaxClients directive with mpm_prefork.
-; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP
-; CGI. The below defaults are based on a server without much resources. Don't
-; forget to tweak pm.* to fit your needs.
-; Note: Used when pm is set to 'static', 'dynamic' or 'ondemand'
-; Note: This value is mandatory.
-pm.max_children = 5
-
-; The number of child processes created on startup.
-; Note: Used only when pm is set to 'dynamic'
-; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
-pm.start_servers = 2
-
-; The desired minimum number of idle server processes.
-; Note: Used only when pm is set to 'dynamic'
-; Note: Mandatory when pm is set to 'dynamic'
-pm.min_spare_servers = 1
-
-; The desired maximum number of idle server processes.
-; Note: Used only when pm is set to 'dynamic'
-; Note: Mandatory when pm is set to 'dynamic'
-pm.max_spare_servers = 3
-
-; The number of seconds after which an idle process will be killed.
-; Note: Used only when pm is set to 'ondemand'
-; Default Value: 10s
-;pm.process_idle_timeout = 10s;
-
-; The number of requests each child process should execute before respawning.
-; This can be useful to work around memory leaks in 3rd party libraries. For
-; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
-; Default Value: 0
-;pm.max_requests = 500
-
-; The URI to view the FPM status page. If this value is not set, no URI will be
-; recognized as a status page. It shows the following informations:
-;   pool                 - the name of the pool;
-;   process manager      - static, dynamic or ondemand;
-;   start time           - the date and time FPM has started;
-;   start since          - number of seconds since FPM has started;
-;   accepted conn        - the number of request accepted by the pool;
-;   listen queue         - the number of request in the queue of pending
-;                          connections (see backlog in listen(2));
-;   max listen queue     - the maximum number of requests in the queue
-;                          of pending connections since FPM has started;
-;   listen queue len     - the size of the socket queue of pending connections;
-;   idle processes       - the number of idle processes;
-;   active processes     - the number of active processes;
-;   total processes      - the number of idle + active processes;
-;   max active processes - the maximum number of active processes since FPM
-;                          has started;
-;   max children reached - number of times, the process limit has been reached,
-;                          when pm tries to start more children (works only for
-;                          pm 'dynamic' and 'ondemand');
-; Value are updated in real time.
-; Example output:
-;   pool:                 www
-;   process manager:      static
-;   start time:           01/Jul/2011:17:53:49 +0200
-;   start since:          62636
-;   accepted conn:        190460
-;   listen queue:         0
-;   max listen queue:     1
-;   listen queue len:     42
-;   idle processes:       4
-;   active processes:     11
-;   total processes:      15
-;   max active processes: 12
-;   max children reached: 0
-;
-; By default the status page output is formatted as text/plain. Passing either
-; 'html', 'xml' or 'json' in the query string will return the corresponding
-; output syntax. Example:
-;   http://www.foo.bar/status
-;   http://www.foo.bar/status?json
-;   http://www.foo.bar/status?html
-;   http://www.foo.bar/status?xml
-;
-; By default the status page only outputs short status. Passing 'full' in the
-; query string will also return status for each pool process.
-; Example:
-;   http://www.foo.bar/status?full
-;   http://www.foo.bar/status?json&full
-;   http://www.foo.bar/status?html&full
-;   http://www.foo.bar/status?xml&full
-; The Full status returns for each process:
-;   pid                  - the PID of the process;
-;   state                - the state of the process (Idle, Running, ...);
-;   start time           - the date and time the process has started;
-;   start since          - the number of seconds since the process has started;
-;   requests             - the number of requests the process has served;
-;   request duration     - the duration in µs of the requests;
-;   request method       - the request method (GET, POST, ...);
-;   request URI          - the request URI with the query string;
-;   content length       - the content length of the request (only with POST);
-;   user                 - the user (PHP_AUTH_USER) (or '-' if not set);
-;   script               - the main script called (or '-' if not set);
-;   last request cpu     - the %cpu the last request consumed
-;                          it's always 0 if the process is not in Idle state
-;                          because CPU calculation is done when the request
-;                          processing has terminated;
-;   last request memory  - the max amount of memory the last request consumed
-;                          it's always 0 if the process is not in Idle state
-;                          because memory calculation is done when the request
-;                          processing has terminated;
-; If the process is in Idle state, then informations are related to the
-; last request the process has served. Otherwise informations are related to
-; the current request being served.
-; Example output:
-;   ************************
-;   pid:                  31330
-;   state:                Running
-;   start time:           01/Jul/2011:17:53:49 +0200
-;   start since:          63087
-;   requests:             12808
-;   request duration:     1250261
-;   request method:       GET
-;   request URI:          /test_mem.php?N=10000
-;   content length:       0
-;   user:                 -
-;   script:               /home/fat/web/docs/php/test_mem.php
-;   last request cpu:     0.00
-;   last request memory:  0
-;
-; Note: There is a real-time FPM status monitoring sample web page available
-;       It's available in: /usr/share/php/7.0/fpm/status.html
-;
-; Note: The value must start with a leading slash (/). The value can be
-;       anything, but it may not be a good idea to use the .php extension or it
-;       may conflict with a real PHP file.
-; Default Value: not set
-;pm.status_path = /status
-
-; The ping URI to call the monitoring page of FPM. If this value is not set, no
-; URI will be recognized as a ping page. This could be used to test from outside
-; that FPM is alive and responding, or to
-; - create a graph of FPM availability (rrd or such);
-; - remove a server from a group if it is not responding (load balancing);
-; - trigger alerts for the operating team (24/7).
-; Note: The value must start with a leading slash (/). The value can be
-;       anything, but it may not be a good idea to use the .php extension or it
-;       may conflict with a real PHP file.
-; Default Value: not set
-;ping.path = /ping
-
-; This directive may be used to customize the response of a ping request. The
-; response is formatted as text/plain with a 200 response code.
-; Default Value: pong
-;ping.response = pong
-
-; The access log file
-; Default: not set
-;access.log = log/$pool.access.log
-
-; The access log format.
-; The following syntax is allowed
-;  %%: the '%' character
-;  %C: %CPU used by the request
-;      it can accept the following format:
-;      - %{user}C for user CPU only
-;      - %{system}C for system CPU only
-;      - %{total}C  for user + system CPU (default)
-;  %d: time taken to serve the request
-;      it can accept the following format:
-;      - %{seconds}d (default)
-;      - %{miliseconds}d
-;      - %{mili}d
-;      - %{microseconds}d
-;      - %{micro}d
-;  %e: an environment variable (same as $_ENV or $_SERVER)
-;      it must be associated with embraces to specify the name of the env
-;      variable. Some exemples:
-;      - server specifics like: %{REQUEST_METHOD}e or %{SERVER_PROTOCOL}e
-;      - HTTP headers like: %{HTTP_HOST}e or %{HTTP_USER_AGENT}e
-;  %f: script filename
-;  %l: content-length of the request (for POST request only)
-;  %m: request method
-;  %M: peak of memory allocated by PHP
-;      it can accept the following format:
-;      - %{bytes}M (default)
-;      - %{kilobytes}M
-;      - %{kilo}M
-;      - %{megabytes}M
-;      - %{mega}M
-;  %n: pool name
-;  %o: output header
-;      it must be associated with embraces to specify the name of the header:
-;      - %{Content-Type}o
-;      - %{X-Powered-By}o
-;      - %{Transfert-Encoding}o
-;      - ....
-;  %p: PID of the child that serviced the request
-;  %P: PID of the parent of the child that serviced the request
-;  %q: the query string
-;  %Q: the '?' character if query string exists
-;  %r: the request URI (without the query string, see %q and %Q)
-;  %R: remote IP address
-;  %s: status (response code)
-;  %t: server time the request was received
-;      it can accept a strftime(3) format:
-;      %d/%b/%Y:%H:%M:%S %z (default)
-;      The strftime(3) format must be encapsuled in a %{<strftime_format>}t tag
-;      e.g. for a ISO8601 formatted timestring, use: %{%Y-%m-%dT%H:%M:%S%z}t
-;  %T: time the log has been written (the request has finished)
-;      it can accept a strftime(3) format:
-;      %d/%b/%Y:%H:%M:%S %z (default)
-;      The strftime(3) format must be encapsuled in a %{<strftime_format>}t tag
-;      e.g. for a ISO8601 formatted timestring, use: %{%Y-%m-%dT%H:%M:%S%z}t
-;  %u: remote user
-;
-; Default: "%R - %u %t \"%m %r\" %s"
-;access.format = "%R - %u %t \"%m %r%Q%q\" %s %f %{mili}d %{kilo}M %C%%"
-
-; The log file for slow requests
-; Default Value: not set
-; Note: slowlog is mandatory if request_slowlog_timeout is set
-;slowlog = log/$pool.log.slow
-
-; The timeout for serving a single request after which a PHP backtrace will be
-; dumped to the 'slowlog' file. A value of '0s' means 'off'.
-; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
-; Default Value: 0
-;request_slowlog_timeout = 0
-
-; The timeout for serving a single request after which the worker process will
-; be killed. This option should be used when the 'max_execution_time' ini option
-; does not stop script execution for some reason. A value of '0' means 'off'.
-; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
-; Default Value: 0
-request_terminate_timeout = 1d
-
-; Set open file descriptor rlimit.
-; Default Value: system defined value
-;rlimit_files = 1024
-
-; Set max core size rlimit.
-; Possible Values: 'unlimited' or an integer greater or equal to 0
-; Default Value: system defined value
-;rlimit_core = 0
-
-; Chroot to this directory at the start. This value must be defined as an
-; absolute path. When this value is not set, chroot is not used.
-; Note: you can prefix with '$prefix' to chroot to the pool prefix or one
-; of its subdirectories. If the pool prefix is not set, the global prefix
-; will be used instead.
-; Note: chrooting is a great security feature and should be used whenever
-;       possible. However, all PHP paths will be relative to the chroot
-;       (error_log, sessions.save_path, ...).
-; Default Value: not set
-;chroot =
-
-; Chdir to this directory at the start.
-; Note: relative path can be used.
-; Default Value: current directory or / when chroot
-chdir = __FINALPATH__
-
-; Redirect worker stdout and stderr into main error log. If not set, stdout and
-; stderr will be redirected to /dev/null according to FastCGI specs.
-; Note: on highloaded environement, this can cause some delay in the page
-; process time (several ms).
-; Default Value: no
-;catch_workers_output = yes
-
-; Clear environment in FPM workers
-; Prevents arbitrary environment variables from reaching FPM worker processes
-; by clearing the environment in workers before env vars specified in this
-; pool configuration are added.
-; Setting to "no" will make all environment variables available to PHP code
-; via getenv(), $_ENV and $_SERVER.
-; Default Value: yes
-;clear_env = no
-
-; Limits the extensions of the main script FPM will allow to parse. This can
-; prevent configuration mistakes on the web server side. You should only limit
-; FPM to .php extensions to prevent malicious users to use other extensions to
-; execute php code.
-; Note: set an empty value to allow all extensions.
-; Default Value: .php
-;security.limit_extensions = .php .php3 .php4 .php5 .php7
-
-; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from
-; the current environment.
-; Default Value: clean env
-;env[HOSTNAME] = $HOSTNAME
-;env[PATH] = /usr/local/bin:/usr/bin:/bin
-;env[TMP] = /tmp
-;env[TMPDIR] = /tmp
-;env[TEMP] = /tmp
-
-; Additional php.ini defines, specific to this pool of workers. These settings
-; overwrite the values previously defined in the php.ini. The directives are the
-; same as the PHP SAPI:
-;   php_value/php_flag             - you can set classic ini defines which can
-;                                    be overwritten from PHP call 'ini_set'.
-;   php_admin_value/php_admin_flag - these directives won't be overwritten by
-;                                     PHP call 'ini_set'
-; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no.
-
-; Defining 'extension' will load the corresponding shared extension from
-; extension_dir. Defining 'disable_functions' or 'disable_classes' will not
-; overwrite previously defined php.ini values, but will append the new value
-; instead.
-
-; Note: path INI options can be relative and will be expanded with the prefix
-; (pool, global or /usr)
-
-; Default Value: nothing is defined by default except the values in php.ini and
-;                specified at startup with the -d argument
-;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f www@my.domain.com
-;php_flag[display_errors] = off
-;php_admin_value[error_log] = /var/log/fpm-php.www.log
-;php_admin_flag[log_errors] = on
-;php_admin_value[memory_limit] = 32M
-
-; Common values to change to increase file upload limit
-; php_admin_value[upload_max_filesize] = 50M
-; php_admin_value[post_max_size] = 50M
-; php_admin_flag[mail.add_x_header] = Off
-
-; Other common parameters
-; php_admin_value[max_execution_time] = 600
-; php_admin_value[max_input_time] = 300
-; php_admin_value[memory_limit] = 256M
-; php_admin_flag[short_open_tag] = On
diff --git a/manifest.json b/manifest.json
index bc171fb..3638c5b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,17 +6,17 @@
         "en": "A web based audio/video streaming application",
         "fr": "Une application de streaming audio et vidéo"
     },
-    "version": "3.9.0~ynh2",
+    "version": "4.1.1.1~ynh1",
     "url": "http://ampache.org",
     "license": "AGPL-3.0",
     "maintainer": {
         "name": "aymhce",
         "email": "aymhce@gmail.com"
     },
-    "multi_instance": true,
     "requirements": {
-        "yunohost": ">= 3.5.0"
+        "yunohost": ">= 3.8.1"
     },
+    "multi_instance": true,
     "services" : [
         "nginx",
         "php7.0-fpm",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index b128cee..248cf5a 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,12 +1,24 @@
 #!/bin/bash
 
+#=================================================
+# COMMON VARIABLES
+#=================================================
+
+# dependencies used by the app
+pkg_dependencies="libav-tools|ffmpeg"
+
+YNH_PHP_VERSION="7.3"
+
+extra_php_dependencies="php${YNH_PHP_VERSION}-mysql php${YNH_PHP_VERSION}-curl php${YNH_PHP_VERSION}-simplexml php${YNH_PHP_VERSION}-gd php${YNH_PHP_VERSION}-ldap"
+
 #=================================================
 # EXPERIMENTAL HELPERS
 #=================================================
 
 # Execute a command with Composer
 #
-# usage: ynh_composer_exec --phpversion=phpversion [--workdir=$final_path] --commands="commands"
+# usage: ynh_composer_exec [--phpversion=phpversion] [--workdir=$final_path] --commands="commands"
+# | arg: -v, --phpversion - PHP version to use with composer
 # | arg: -w, --workdir - The directory from where the command will be executed. Default $final_path.
 # | arg: -c, --commands - Commands to execute.
 ynh_composer_exec () {
@@ -19,7 +31,7 @@ ynh_composer_exec () {
 	# Manage arguments with getopts
 	ynh_handle_getopts_args "$@"
 	workdir="${workdir:-$final_path}"
-	phpversion="${phpversion:-7.0}"
+	phpversion="${phpversion:-$YNH_PHP_VERSION}"
 
 	COMPOSER_HOME="$workdir/.composer" \
 		php${phpversion} "$workdir/composer.phar" $commands \
@@ -28,18 +40,22 @@ ynh_composer_exec () {
 
 # Install and initialize Composer in the given directory
 #
-# usage: ynh_install_composer --phpversion=phpversion [--workdir=$final_path]
+# usage: ynh_install_composer [--phpversion=phpversion] [--workdir=$final_path] [--install_args="--optimize-autoloader"]
+# | arg: -v, --phpversion - PHP version to use with composer
 # | arg: -w, --workdir - The directory from where the command will be executed. Default $final_path.
+# | arg: -a, --install_args - Additional arguments provided to the composer install. Argument --no-dev already include
 ynh_install_composer () {
 	# Declare an array to define the options of this helper.
-	local legacy_args=vw
-	declare -Ar args_array=( [v]=phpversion= [w]=workdir= )
+	local legacy_args=vwa
+	declare -Ar args_array=( [v]=phpversion= [w]=workdir= [a]=install_args=)
 	local phpversion
 	local workdir
+	local install_args
 	# Manage arguments with getopts
 	ynh_handle_getopts_args "$@"
 	workdir="${workdir:-$final_path}"
-	phpversion="${phpversion:-7.0}"
+	phpversion="${phpversion:-$YNH_PHP_VERSION}"
+	install_args="${install_args:-}"
 
 	curl -sS https://getcomposer.org/installer \
 		| COMPOSER_HOME="$workdir/.composer" \
@@ -47,7 +63,7 @@ ynh_install_composer () {
 		|| ynh_die "Unable to install Composer."
 
 	# update dependencies to create composer.lock
-	ynh_composer_exec --phpversion="${phpversion}" --workdir="$workdir" --commands="install --no-dev" \
+	ynh_composer_exec --phpversion="${phpversion}" --workdir="$workdir" --commands="install --no-dev $install_args" \
 		|| ynh_die "Unable to update core dependencies with Composer."
 }
 
diff --git a/scripts/backup b/scripts/backup
index 13a0d3e..cd4a549 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -6,6 +6,7 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
+#Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
@@ -28,27 +29,27 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 
 #=================================================
-# STANDARD BACKUP STEPS
+# DECLARE DATA AND CONF FILES TO BACKUP
+#=================================================
+ynh_script_progression --message="Declaring files to be backed up..."
+
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Backing up the main app directory..."
 
 ynh_backup --src_path="$final_path"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Backing up nginx web server configuration..."
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # BACKUP THE PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Backing up php-fpm configuration..."
 
-ynh_backup --src_path="/etc/php/7.0/fpm/pool.d/$app.conf"
+ynh_backup --src_path="/etc/php/${YNH_PHP_VERSION}/fpm/pool.d/$app.conf"
 
 #=================================================
 # BACKUP THE MYSQL DATABASE
diff --git a/scripts/install b/scripts/install
index 6a961c2..6d1613b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -55,7 +55,7 @@ ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 #=================================================
 ynh_script_progression --message="Installing dependencies..." --weight=25
 
-ynh_install_app_dependencies libav-tools php-cli
+ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # CREATE A MYSQL DATABASE
@@ -63,8 +63,9 @@ ynh_install_app_dependencies libav-tools php-cli
 ynh_script_progression --message="Creating a MySQL database..."
 
 db_name=$(ynh_sanitize_dbid --db_name=$app)
+db_user=$db_name
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_mysql_setup_db --db_user=$db_name --db_name=$db_name
+ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -97,7 +98,7 @@ ynh_system_user_create --username=$app
 ynh_script_progression --message="Configuring php-fpm..."
 
 # Create a dedicated php-fpm config
-ynh_add_fpm_config
+ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"
 
 #=================================================
 # SPECIFIC SETUP
@@ -109,7 +110,7 @@ ynh_script_progression --message="Preconfiguring ampache..." --weight=2
 conf_file="$final_path/config/ampache.cfg.php"
 cp ../conf/ampache.cfg.php "$conf_file"
 
-ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_name" --target_file="$conf_file"
+ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_user" --target_file="$conf_file"
 ynh_replace_string --match_string="__DBPWD__" --replace_string="$db_pwd" --target_file="$conf_file"
 ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$conf_file"
 ynh_replace_string --match_string="__PATHTOCHANGE__" --replace_string="$path_url" --target_file="$conf_file"
@@ -124,6 +125,7 @@ ynh_store_file_checksum --file="$conf_file"
 #=================================================
 # LOAD DEFAULT DATABASE
 #=================================================
+ynh_script_progression --message="Loading default database..."
 
 # Load default ampache database
 ynh_mysql_connect_as --user=$app --password="$db_pwd" --database=$app < "$final_path/sql/ampache.sql"
@@ -134,13 +136,12 @@ ynh_mysql_connect_as --user=$app --password="$db_pwd" --database=$app < "$final_
 ynh_script_progression --message="Installing ampache with composer..." --weight=45
 
 # Install composer
-ynh_install_composer
-
-ynh_exec_warn_less ynh_composer_exec --commands=\"install --prefer-source --no-dev\"
+ynh_install_composer --phpversion="${YNH_PHP_VERSION}" --workdir="$final_path" --install_args="--prefer-source --no-dev"
 
 #=================================================
 # INSTALL MULTIMEDIA DIRECTORIES
 #=================================================
+ynh_script_progression --message="Installing multimedia directories..." --weight=5
 
 ynh_multimedia_build_main_dir
 
@@ -163,6 +164,7 @@ sleep 1
 #=================================================
 # LOAD ADMIN DATABASE
 #=================================================
+ynh_script_progression --message="Loading admin database..."
 
 cp ../conf/admin.sql /tmp/
 ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin_ampache" --target_file=/tmp/admin.sql
@@ -176,6 +178,7 @@ ynh_secure_remove --file=/tmp/admin.sql
 #=================================================
 # SECURE FILES AND DIRECTORIES
 #=================================================
+ynh_script_progression --message="Securing files and directories..."
 
 # Set permissions to ampache directory
 chown -R $app: $final_path
diff --git a/scripts/remove b/scripts/remove
index 71899c1..7fd7240 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -18,6 +18,7 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================
@@ -28,7 +29,7 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 ynh_script_progression --message="Removing the MySQL database..." --weight=3
 
 # Remove a database if it exists, along with the associated user
-ynh_mysql_remove_db --db_user=$db_name --db_name=$db_name
+ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # REMOVE DEPENDENCIES
diff --git a/scripts/restore b/scripts/restore
index 1862c08..79e40e7 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -6,6 +6,8 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
+#Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
+source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================
@@ -25,6 +27,7 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
@@ -41,6 +44,7 @@ test ! -d $final_path \
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
+ynh_script_progression --message="Restoring the nginx configuration..."
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
@@ -62,6 +66,7 @@ ynh_system_user_create --username=$app
 #=================================================
 # RESTORE USER RIGHTS
 #=================================================
+ynh_script_progression --message="Restoring user rights..."
 
 # Restore permissions on app files
 chown -R $app: $final_path
@@ -69,8 +74,12 @@ chown -R $app: $final_path
 #=================================================
 # RESTORE THE PHP-FPM CONFIGURATION
 #=================================================
+ynh_script_progression --message="Restoring PHP-FPM configuration..."
 
-ynh_restore_file --origin_path="/etc/php/7.0/fpm/pool.d/$app.conf"
+ynh_restore_file --origin_path="/etc/php/${YNH_PHP_VERSION}/fpm/pool.d/$app.conf"
+
+# Recreate a dedicated php-fpm config
+ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"
 
 #=================================================
 # SPECIFIC RESTORATION
@@ -79,7 +88,8 @@ ynh_restore_file --origin_path="/etc/php/7.0/fpm/pool.d/$app.conf"
 #=================================================
 ynh_script_progression --message="Reinstalling dependencies..." --weight=30
 
-ynh_install_app_dependencies libav-tools
+# Define and install dependencies
+ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # RESTORE THE MYSQL DATABASE
@@ -87,8 +97,8 @@ ynh_install_app_dependencies libav-tools
 ynh_script_progression --message="Restoring the MySQL database..." --weight=5
 
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
-ynh_mysql_setup_db --db_user=$db_name --db_name=$db_name --db_pwd=$db_pwd
-ynh_mysql_connect_as --user=$db_name --password=$db_pwd --database=$db_name < ./db.sql
+ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
+ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
 
 #=================================================
 # GENERIC FINALIZATION
@@ -97,7 +107,7 @@ ynh_mysql_connect_as --user=$db_name --password=$db_pwd --database=$db_name < ./
 #=================================================
 ynh_script_progression --message="Reloading nginx web server and php-fpm..."
 
-ynh_systemd_action --service_name=php7.0-fpm --action=reload
+ynh_systemd_action --service_name=php${YNH_PHP_VERSION}-fpm --action=reload
 ynh_systemd_action --service_name=nginx --action=reload
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index e75754c..94244fd 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+#=================================================
+# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -20,11 +22,13 @@ admin_ampache=$(ynh_app_setting_get --app=$app --key=admin)
 is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 secret_key=$(ynh_app_setting_get --app=$app --key=secret_key)
 
 #=================================================
 # CHECK VERSION
 #=================================================
+ynh_script_progression --message="Checking version..."
 
 upgrade_type=$(ynh_check_app_version_changed)
 
@@ -52,6 +56,7 @@ fi
 if [ -z "$db_name" ]; then
 	db_name=$(ynh_sanitize_dbid --db_name=$app)
 	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
+    db_user=$db_name
 fi
 
 # If final_path doesn't exist, create it
@@ -114,7 +119,7 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Upgrading dependencies..." --weight=5
 
-ynh_install_app_dependencies libav-tools php-cli
+ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # CREATE DEDICATED USER
@@ -130,7 +135,7 @@ ynh_system_user_create --username=$app
 ynh_script_progression --message="Upgrading php-fpm configuration..." --weight=2
 
 # Create a dedicated php-fpm config
-ynh_add_fpm_config
+ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"
 
 #=================================================
 # SPECIFIC UPGRADE
@@ -145,7 +150,7 @@ then
     conf_file="$final_path/config/ampache.cfg.php"
     ynh_backup_if_checksum_is_different --file="$conf_file"
 
-    ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_name" --target_file="$conf_file"
+    ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_user" --target_file="$conf_file"
     db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
     ynh_replace_string --match_string="__DBPWD__" --replace_string="$db_pwd" --target_file="$conf_file"
     ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$conf_file"
@@ -162,15 +167,14 @@ then
     ynh_script_progression --message="Upgrading ampache with composer..." --weight=30
 
     # Install composer
-    ynh_install_composer
-
-    ynh_composer_exec --commands="config discard-changes true"
-    ynh_composer_exec --commands="update --prefer-source --no-interaction --no-dev"
+    ynh_install_composer --phpversion="${YNH_PHP_VERSION}" --workdir="$final_path" --install_args="--prefer-source --no-dev"
+    ynh_composer_exec --phpversion="${YNH_PHP_VERSION}" --workdir="$final_path" --commands="config discard-changes true"
 fi
 
 #=================================================
 # UPDATE MULTIMEDIA DIRECTORIES
 #=================================================
+ynh_script_progression --message="Updating multimedia directories..."
 
 ynh_multimedia_build_main_dir
 
@@ -199,6 +203,7 @@ fi
 #=================================================
 # SECURE FILES AND DIRECTORIES
 #=================================================
+ynh_script_progression --message="Securing files and directories..."
 
 # Set permissions on app files
 chown -R $app: $final_path
@@ -208,7 +213,7 @@ chown -R $app: $final_path
 #=================================================
 ynh_script_progression --message="Upgrading SSOwat configuration..."
 
-# Keep app public if necessary
+# Make app public if necessary
 if [ $is_public -eq 0 ]
 then
 	ynh_app_setting_delete --app=$app --key=unprotected_uris