I'm trying to fix my friend's PSP which I hacked for him. It's a slim silver 2001 model. He said he spilled juice on it and it started having problems. It boots to the XMB screen but none of the buttons seem to work. I can tell it's not frozen because the selected icon is doing the glow animation. Odldy, when I go into the recovery menu the buttons work fine.
I used a magic memory stick to restore the PSP to official firmware 3.71. After I did that the buttons worked perfectly in the XMB. So I decided to re-hack it and installed 3.71 m33. When I got back to the XMB the buttons wouldn't work again.
So what's going on here? Why do the buttons work fiine in the recovery menu and official FW XMB, but not with CFW?
Edit: It should be noted that when all this started happening the PSP was running 5.50 GEN-D2