started section on how to upgrade from a FreeNas Jail, also added smiple recovery from bad sqlite version

Installation.md

@@ -110,4 +110,17 @@ command_args="${procname} /usr/local/share/Radarr/Radarr.exe --data=${radarr_dat
 start_precmd="export XDG_CONFIG_HOME=${radarr_data_dir}"
 
 run_rc_command "$1"
+```
+### Manually Update Radarr From Within Jail ###
+
+```bash
+# workaround for sqlite "fdatasync" error that occurs on recent versions (> 3.18?) of sqlite3 
+pkg lock sqlite3
+pkg update && pkg upgrade
+```
+
+if you've happened to upgrade without locking sqlite then check `/var/cache/pkg/sqlite-XXXX` for the 3.18 and force install over it.
+```bash
+pkg install -f /var/cache/pkg/<sqlite-pkg-name>.tgz
+pkg lock sqlite3
 ```