Fed up with having a version 2.0 firmware and missing out on all the homebrew, emulators and piracy that could be down with 1.5 firmware?
Visit PSP Updates and follow the instructions in how to downgrade your PSP from 2.0 to 1.5. Over 500 comments with nearly 100% working. Need to download some files and there are torrents available to help spread the load. I’ll stick to 2.0 for the time being. If your up for it a guide with pictures is probably of more use.