Android’s built-in formatter often creates a "Removable" drive with GUID Partition Table (GPT) instead of MBR. The PS2 OPL only reads MBR. Fix: Use an app called Partition Table Editor on Android. Change the partition style to MBR (Master Boot Record) and format as Primary FAT32.

, you can connect your PS2's flash drive directly to your Android phone. Android USBUtil : While the original USBUtil is a Windows , players often use

The legacy Windows tool has not been ported, and modern Android development has shifted toward emulation.