(NOOB) Which firmware should i use to run most emulators?

JUST installed 3.03 OE-C after an awful experience downgrading to 1.50 from 2.80 ...

which firmware version should i be running to use these emulators? (snes, nes, psx, gba, etc)
is 3.03 OE-C ideal?

im asking because i see a few different custom firmware versions people swear by...
and also the emulator's file specs say firmware version 1.50 ... so then i thought, uh was i not supposed to install 3.03 OE-C ?

thanks

[ace]

Nah, you were supposed to install a custom firmware. If the emulator is originally for 1.50 al you do is put it in the GAME150 folder instead of the actual GAME folder on your memory card. Actually, technically, 3.40OE-A would be the best for psx emulation since the emulator is built in, you don't need to use a emulator (same is for 3.03OE-C for psx games, but 3.40OE-A is better performance wise for psx emulation) Unless your a die hard psx fanboy, 3.03OE-C should be just find for all your emulators. Just stick um in the GAME150 folder.

great info, thanks