Well I've got a PSP 1001 and I want to play Taiko no Tatsujin Portable DX. Okay! Grab the ISO and I put it on PSP. One day later, I got it to PARTIALLY WORK.
I've gotten stuck on a loading screen. Here's the list of things I tried:
Disable NO-UMD
Enable NO-UMD
Move the laser inside the UMD drive
Patch Promethus with ISO-Tool
Look up solutions for 5 hours and fail.
Dosen't seem to work. Please help me with this, I have to go the US soon, and I don't have internet there.