PSP How to upgrade lower firmwares to 3.50 sony firmware

i successfully upgraded my psp 3.10 to 3.50 watching your video :)

can some1 send me a link below 3.50

if i got psp 3.80 filmware how do i get lower when i download a lowere one it says no need to

can upload at megaupload pls

in my psp there is ver 2.50 instead of 3.50 what is needs to be done?

Thnx 4 the help it worked 4 me this is a great site :D

HI, I keep getting an error, saying "this game could not be started (DADADADA) What does this mean

i cant upgrade too i got that DADADADA errror. Help please

I downloaded the file from both sources and both were corrupt I have 3.40

thanx alot ur video really helped me!!! :)

once i download the file i try to open it and it says it cant like file canot be located or osmething

i am using psp 2.60 virsion, if i install firmware version 3.5 on it, will it works with full functions?. kindly if u guys have any suggestions, plz post the commant as soon as possible, regards and thanks golay333

my system software version is 3.50 i've added the mame emulator as instructed but when I try and run the program it comes up a says "the game could not be started (80020148)what have I done wrong? do I have to update the firmware agin? if so how do I do it? hope someone can help. cheers

what firmware version do i need to run gba roms, psp roms,sega mega drive, snes, n64 roms from the internet. my psp is firmware v1.50. can somebody please help me thanks.

heyy thank you. some vids in utube werent clear but urs was very clear. thank you very much.

U R DA MAN!!!
DAMN IT MAN!!!

can i used it with my 2.82?
reply asap. tnx