3.71 Memory Stick Driver (fatmsmod.prx) for Custom Firmware 5.00 M33

I guess “fatmsmod.prx” from firmware 3.71 is still the recommended memory stick driver of choice. And thanks to Dark_AleX, you can now enable the 3.71 driver under custom firmware 5.00 M33.

Instructions:

1. decrypt 3.71 using psardumper (square option).
2. copy fatmsmod.prx to the root of the memory stick.
3. copy FATMS371 to /PSP/GAME or /PSP/GAME5XX and run the program.

Download:
3.71 MS Patch (fatmsmod.prx) for 5.00 M33
PSP (Official) 3.71 Update
PSARDumper

- source: dark-alex