hey
i want to know whats the latest version available
i have found 2 versions of it R21c and R21d they both crash when i try to load a game that i had saved using its save state feature both the 1000 and 2000 crash, though 2000 has more memory than the 1000

can some one help me, all i want to is savestate in a ps1 game on my psp-
whats the best software i can use to savestate?

psp 1000 - 6.60ME1.8
psp 2000 - 5.50 GEN-D3