PSP Customization Discuss 3.71 fatmsmod v2 patch works for 4.01m33 ( slims only ) in the Sony Playstation Portable forums;
thanks to RainMotorsports over at CSpot for his tutorial and osnap1584 for confirming that it works. just run it under ...

The purpose of this patch is to load the fat memory stick driver of 3.71 in 3.80/3.90 to make memory stick reading work better.

• This process flashes the fatmsmod.prx as flash0:/kd/fatms371.prx, it adds a custom file needed to compatibilize the module with 3.80/3.90 (fatms371_friend.prx), and changes the pspbt* files.
• Note: fatmsmod of 3.71 usually works better because it has a better cache system, and usually reads on bigger blocks. (in some things is worse than 3.89/3.90 like sometimes reading more data than needed - lazy prediction -).
• However it uses more kernel memory, and it is unknown if it will have any kind of secondary effect running this module in 3.80/3.90
• The lags in np9660 no umd mode won’t probably be solved, as that is a different problem.