Hello, My psp wont upgrade past 3.90. Ive tried both cfw and ofw- any version above 3.90 and the installation says its succesful, but it wont restart after installation. I have tried dc7 and 8, with the same results. If flash 3.90 or lower- it works fine. Higher and it bricks. This is a slim psp that has run cfw 5.0+ in the past. Any idea what the problem is? Thanks for any help at all!