V4.05 official problem..?

Question

i installed v4.05 on my psp via "network update"..so after that its finished... i thought that it will be just fine.... but now when i checked at my memory card.. bcoz i want to play a game.. and it says there.. "there are no games". but when i plug it in the pc there are!!! my psp in fat... i didnt know what will happen bcoz im a newbie when it comes to updating psps and playing iso or hacking psp...but i did that bcoz in our country its expensive to upgrade your psp in a shop so i tried in our house then that happens... what will i do??? if i downgraded it maybe it will be bricked... so it will cost alot of expenses about 2000 pessos?? or about $40-$50.. so in our country its very big but maybe some countries its very cheap.. so could someone help me with my problem fixing my psp.. without bricking it..may it could be adding a file or something??

Answer 1

It's because you've made your firmware official by upgrading to  v4.05 via network update and could no longer read the games in your iso files or the "pirated games." As of now the only way to downgrade is by using Pandora's battery and Magic Memory. There is no known file you can download to return it back to its former version.

Answer 2

Check out http://www.squidoo.com/psp-repair They can show you how to fix anything on your psp:  firmware, the LCD screen, joystick, whatever.

They will also teach you to downgrade, play non UMD movies, download games ect