How to Unbrick / Downgrade Any Firmware PSP (pandora)

This is a video on how to unbrick or downgrade your PSP using a Pandora Battery and a Magic Memory Stick and install version 1.50 offical firmware or 3.71 M33 custom firmware.

NOTE: This has not been tested on a Slim PSP but should work - if you are downgrading your fully working PSP, accept the risk that you may brick it (this goes for both Fat and Slim PSPs). I am not liable for your PSP bricking - if you do this right, you can unbrick it =D.

You will need:

- A PSP (to unbrick or downgrade to 1.50 OFW)
- A Working PSP (for reading memory stick, etc.)
- A Memory Stick *PRO* Duo (has to be pro duo, not just duo)
- Mini-USB cable (to connect PSP to PC)
- Pandora Battery (will soon upload a video on how to make one, until then buy one or make one if you know how)
- "4mms.zip" which you can download from the below link...

4mms.zip (Pandora installer):

http://www.megaupload.com/?d=102SLDA4

Custom Firmware:

http://dark-alex.org/

Official Firmware:

http://alek.dark-alex.org/filez/psp_fw/
http://www.us.playstation.com/psp/downloads/systemupdate

IF YOU BRICK YOUR WORKING PSP WHEN TRYING TO DOWNGRADE (this obviously doesn't go for people with a bricked PSP) I AM NOT LIABLE! IT IS YOUR OWN DOING AND IF YOU FOLLOW THE VIDEO CORRECTLY YOU SHOULD BE ABLE TO UNBRICK IT! =D.

NOTE: I RECOMMEND DISABLING YOUR ANTIVIRUS AND/OR FIREWALL EXTRACTING THE 4mms.zip FILE BECAUSE IT CAN BLOCK THE PROGRAM SO YOU CANNOT CREATE YOUR MAGIC MEMORY STICK. (If you do disable these, make sure your internet is off and when you turn it back on, make sure they are re-enabled)

Comment & Rate - Penguinn08 =D!