To update current phpBB Gallery from v1.0.5 to v1.0.6
Must backup all relevant files and databases prior to starting any work.
Download the relevant MOD package from the host site. Update existing gallery using the appropriate update package. This to include the editing. uploading and installation of all relevant files.
Install, test and debug the updated MOD.
Only when absolutely necessary, restore site to it's original condition using the backups you made, prior to beginning the work.
Fully test completed MOD to make sure that it is 100% compatible with all exisitng MODs and current site setup.