Some UMD PSP games will try and update the PSP, which isn’t good if you like running sweet homebrew, emulators and custom application- but here’s an app that will stop it. “This program avoids the update necessity from new PSP games. The PSP cannot be destroyed by doing this!” Testing this program out, it asks for the UMD to be in the drive and then will launch the UMD that is in it, bypassing the update! [via] Link.
HOW TO -not- update the PSP