My PSP randomly crashes sometimes when I attempt to save my games. On Persona 3 it will go to the PSP menu save screen and then freeze. I can't go back to HOME because HOME will freeze. I have to completely shut my PSP off to fix problem. I've had similar issues with 2 other games, GTA:VCS and y7.
Saves also don't work properly with PSX games. On my Vagrant Story game, I try to save, it acts like it saves correctly but when I turn off the game and turn it back on, it didn't save at all and I still have the original save file.
I'm using 5.50 GEN D3 and have an original PSPhat.