Let me just inform you I have done research on this and the tutorials/videos online don't help me because I do not have a version.txt, I don't know why it's been a long time since I played around with my PSP, and I've practically forgotten everything. I want this for Digimon Re: Digitized. My version shows up as 9.90 which I need to downgrade in-order to install the original 6.60 so I can then go into the Pro 6.60. EDIT-Do I really need to update for Digimon Re: Digitized? I've done a lot of nice stuff to this like get PS1 games to work on it, and enabled cheats for both PS1 and PSP games and frankly unless it's 100% necessary I'd rather not bother with it. Or just get the emulated version for Android which has no problems.