psp3005 ver.6.31 downgrade to 6.20 pro b7 done!!!

UNIT: PSP3005 VERSION:6.31
PROBLEM: NEED TO MODIFY TO 6.20 TO UPLOAD GAMES
Actions to be taken: Downgrade to 6.20ofw then customized to 6.20PRO-B7
TUTORIAL


ORIGINAL VERSION PSP3005 VER: 6.31 



Click the PSP_620_635_639 DOWNGRADER



Press X to start 











DONE