so i got a freind's psp and he wants me to downgrade his 2.7 to 1.5 im having problems, i put the downdater folder in game, and updater folder, got the 1.5 eboot renamed UPDATE and in the update folder, then copied files such as prx blah blah into root of memory stick and added a new psp folder. my battery is 100% with ac adapter highlighted photo icon pressed triangle, slideshow, bluescreen, psp resetted. NOW i went to games (PSP UPDATE ver.X.YZ) and it says ''game cannot be started'' (80020148) WHY?!!!:Argh:
anyone can help?