diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
index aded581..de2af82 100644
--- a/doc/DISCLAIMER.md
+++ b/doc/DISCLAIMER.md
@@ -1,12 +1,5 @@
-* Any known limitations, constrains or stuff not working, such as (but not limited to):
-    * requiring a full dedicated domain ?
-    * architectures not supported ?
-    * not-working single-sign on or LDAP integration ?
-    * the app requires an important amount of RAM / disk / .. to install or to work properly
-    * etc...
+* How to post-install:
+    * The database credentials are send to the admin be email.
 
-* Other infos that people should be aware of, such as:
-    * any specific step to perform after installing (such as manually finishing the install, specific admin credentials, ...)
-    * how to configure / administrate the application if it ain't obvious
-    * upgrade process / specificities / things to be aware of ?
-    * security considerations ?
+* How to upgrade:
+    * `https://www.domain.ltd/mybb/install/upgrade.php` and follow the post install.
diff --git a/scripts/upgrade b/scripts/upgrade
index 5fe48f5..a488297 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -70,22 +70,12 @@ ynh_system_user_create --username=$app --home_dir="$final_path"
 if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..." --weight=1
-	# Create a temporary directory
-	#tmpdir="$(mktemp -d)"
-
-	#cp -a "$final_path/inc/config.php" "$tmpdir/config.php"
 	
-	#ynh_secure_remove --file="$final_path"
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
-	#mv $final_path/Upload/* $final_path/
-	#ynh_secure_remove --file="$final_path/Documentation"
-	#ynh_secure_remove --file="$final_path/Upload"
-	# If install exist, remove it
-	#if  [ -d "$final_path/install" ]; then
-	#	ynh_secure_remove --file="$final_path/install"
-	#fi
-	#cp -a "$tmpdir/config.php" "$final_path/inc/config.php"
+
+	#This remoses the lock to do the post upgrade process.
+	ynh_secure_remove --file="$final_path/install/lock"
 fi
 
 chmod 750 "$final_path"