– These are obscure compatibility bits. Mode 1 (alternate DMA) helps God of War on USB drives. Mode 2 (unhook syscalls) helps Guitar Hero .
While you can technically edit the file with a standard text editor like Notepad++ , the format is binary and sensitive, making specialized tools much safer. ulcfg ps2 editor
The industry standard for creating and managing ul.cfg files. It includes a "Recover Games" feature that can rebuild a deleted or corrupted ul.cfg file by scanning the game chunks already on your drive. – These are obscure compatibility bits
