Since this is legacy homebrew software, it is often found on old forum archives.
The original USBUtil was developed by "Iseult," likely a Spanish or Russian developer, and early versions contained non-English menus or translation errors. Since this is legacy homebrew software, it is
Insert Shadow of the Colossus (original disc). USBUtil would read the disc and compress it to a .ZSO format, reducing size from 4.3GB to ~2.8GB. Since this is legacy homebrew software