The data is corrupted

[deceasekain]

I downloaded and instaled every GBA for PSP and every time i try and open it it gives me the same stupid message.
could someone give me beter install instructions?
and wich one is the best one?

[under_0ath777]

first read tuturials, second don't get your hopes up on the gba emus, third keep your firmware as low as possible

[deceasekain]

uh ok sorry i am very new to psp

[under_0ath777]

oh ok, first check your firmware, 2.0-2.6 run off gta, 2.7-2.71 cant run homebrew, but 1.5 can run homebrew off the menu

[ACID]

We need to know what firmware your using if you want our help.

[jman420]

you can find out your system software by going to the settings area, and going down to system settings, and going to system information, it will tell you your Firmware there..

[djwirtz]

to bad i can`t downgrade