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Note: After installing the required files to your memory stick, wait for about 1 minute before closing the

(Like the savegames in your \PSP\SAVEDATA\ folder and any video / music / pictures you may have.) Please make a backup copy of any important files to your computer before you continue. There is a very small risk of bricking your PSP when writing to flash memory.Īll downgrades should be successful if you follow the instructions carefully and correctly.Īlthough you may be one of the unlucky few that the downgrade fails on.īy following this guide you understand the risks you are taking with your PSP.įormatting your memory stick will erase ' everything' on it. Upgrading / Downgrading your PSPs firmware will write to the 'flash memory' of your PSP. The origanal source can be seen here at: įollow all the instructions shown on my video tutorials, also charge the PSP's battery 100% before beginning

Below are complete instructions on how to change your PSP's firmware from the official version to a custom version.