Right here is what you do, go into recovery mode go to Advanced>Format flash1 and reset settings. But before you do backup any Music, Games,Videos, e.t.c. you have on it. Also would be a good idea to format the memory stick after backing up your files, when thats all done try the iso again. GOOD LUCK

I am now playing Silent Hill Origins, wicked.
PSP History First>White. 3.00>3.03>GTA HACK>1.50>3.10 OE-A>3.30 OE-A>3.40 OE-A>1.50>3.10 OE-A>3.30 OE-A>3.40 OE-A>1.50>3.10 OE-A>3.30 OE-A>3.40 OE-A> Second>Black. 2.71>3.00>3.03>GTA HACK>1.50>3.10 OE-A>3.30 OE-A>3.40 OE-A>1.50>3.52 M33>3.52 M33-4>3.71 M33 