Converting and transferring games directly to a USB stick simultaneously is unoptimized and can "stress" or even corrupt the drive. Experts recommend converting to a folder on your PC first and then copying the files over.
If the version you have asks for admin rights unnecessarily, includes unknown .exe files, or claims to "boost USB speed" – it's fake. Stick to the original 2.1 from trusted PS2 communities.
: Allows you to rename games, delete entries from your USB list, and check for fragmentation directly within the interface. Format Conversion : Converts standard ISO and BIN/CUE files into the format required for USB loading. How to Use USB Mode 2 for New Games USBUtil V2.1 Ultimate For PS2 USB Mode 2 Hit - Facebook
We tested this setup on a SCPH-39001 (fat) and a SCPH-75001 (slim) using a 64GB USB 2.0 SanDisk Cruzer.
Try enabling "Mode 2" or "Mode 6" within the OPL game settings on your PS2. In USBUtil, ensure you haven't checked "Extreme" unless you are using an older USB Advance launcher.
The "New" ultimate version includes a built-in defragment viewer. Run USBUtil_Diagnostic.exe on your PC. If it shows , you are ready. If Red , use Defraggler to defrag only the USBUTIL partition.