Homebrew coder Bob Joe has developed an application called PSP Upgrader/Downgrader that should makeupgrading, downgrading, and installing a custom firmwares much easier.

The program is very easy to use and will copy all the files for you, not to mention give you step by step instructions. The developer gave word that this is the first release, so there might be a few bugs.

If you're interested in the development cycle of the program, Bob Joe also gave some details on the improvements implemented since he made version 1.0:

• 1.02 Added M33 Update 2
• 1.01 Added M33 as a current firmware, Added ability to uninstall a custom firmware
• 1.00 Initial Release

There are two versions of PSP Upgrader/Downgrader: a full version having more features and a lite version. Be sure to go over the Readme file and follow the instructions to the letter when using this program.

Download: PSP Upgrader/Downgrader v1.02 (Full version)
Download: PSP Upgrader/Downgrader v1.02 (Lite)