Though its primary function is managing game ISOs and ART, OPL Manager has a built-in that is second to none. It scans your drive, lists all games, and lets you edit titles and compatibility modes in bulk. It also fixes checksums automatically.
Warning: For advanced users only. Corrupting the ul.CFG will hide all your games. ulcfg ps2 editor
: Automatically scan a USB drive for multiple ul.cfg files (e.g., ul.cfg , ul.cfg.old , ul.cfg.temp ) and merge them into a single, valid master file. Though its primary function is managing game ISOs