Update supported versions

docs/Self-Hosting and Development/Installing.md

@@ -1,6 +1,6 @@
 # Installing
 
-0. Setup a LAMP server with PHP 7.2, including PHP extensions mbstring, zip, gd, and imagick
+0. Setup a LAMP server with PHP 7.4, including PHP extensions mbstring, zip, gd, and imagick
 1. Copy `settings.template.php` to `settings.php`
 2. Import `database.sql` into your database server
 3. Edit `settings.php` and fill in your DB info

docs/Self-Hosting and Development/System Requirements.md

@@ -13,10 +13,10 @@ The Business Apps are very lightweight on server resources.  The minimum support
 We test and officially support the following configurations.
 
 * Server Operating System
-    * Ubuntu
-    * Debian
+    * Ubuntu LTS 18.04+
+    * Debian Stable
 * PHP
-    * 7.2
+    * 7.4
 * Database
     * MySQL 5.7+
     * MariaDB 10.0+
@@ -42,14 +42,12 @@ The Business Apps are web-based and built with modern technologies.  This means
 Note: This list is incomplete, as any OS capable of running one of the browsers from the list below will suffice.
 
 * Linux
-	* Netsyms Business Linux
-	* Ubuntu Linux 16.04, 18.04, and supported non-LTS releases
+	* Ubuntu Linux 18.04, 20.04, and supported non-LTS releases
 	* Ubuntu derivatives (such as Linux Mint) based on a supported Ubuntu release
-	* Debian 8 or 9
+	* Debian 9 or 10
 * Android
 	* 5.0+ with Chrome, or
-	* Any supported by Firefox, or
-	* Any supported by the Business Apps for Mobile client
+	* Any supported by Firefox for Android
 
 ### Supported Operating Systems
 Any other operating system running a supported browser is also supported, but we may not provide support for issues not directly related to the Business Apps.