Universal Downgrader and Un-Bricker

I have tried and tested this myself and can cofirm it works like a charm, Basically what you do is convert your mem stick into a bootable disk and convert your spare battery into a JigKick which makes your psp. As always You are the only person responsible for what happens to your psp so follow this tutorial at your own risk

You will need

1. 1 Spare battery
2. 1 Memory Stick Pro Duo (32 meg cards are not pro duo they only duo, so do not work)
3. 1 Working homebrew enabled PSP (either 1.50 or on custom firmware)
4. This download -

Instructions

Creating the "Magic Memory Stick"

1. extract the contents of the download to the root of your C:\ drive
2. enable a usb connection between
3. Insert the memory stick that you want to turn into a "magic memory stick." Back up the contents of the stick to your computer .
4. Use the built-in format tool (in the PSP System Settings menu) to reformat your memory stick.
5. Connect your PSP in USB mode.
6. Open a command prompt (Start -> Run -> cmd)
7. Type "cd c:\pandora\mspformat"
8. Type "mspformat X" where X is the drive of your PSP. For example, my PSP is connected at O:\, so I type "mspformat O".
   
   You should see a prompt like this:
   
   >>> C:\pandora\mspformat>mspformat O
   >>> You are about to format the drive O.
   >>> All data will be lost. Do you want to continue? [Y]
   
9. Type 'y'.
   
   >>> y
   
   and you should see
   
   >>> Drive succesfully formatted, and partition moved.
   
10. copy the contents of the MEM_STICK folder from c:\pandora\ to the root of your mem stick.
11. If you are on custom firmware and have your 1.50 kernal set to GAME150 then skip this step; everyone else read on:
    navigate your way to the root of your memory stick, there is a folder called PSP, go into that and you will see 2 folders called GAME and GAME150, you need to delete the GAME folder and then rename GAME150 to GAME.
12. Disconnect from USB mode and run "Pandora's Battery Firm. Installer" from the Memory Stick section of the GAME menu.
13. Press X to unpack the 1.50 firmware files into their proper place on your memory stick. The program will automatically exit.
14. Connect in USB mode. Look in the root of your memory stick (where you have the PSP folder and the UPDATE.PBP file). There should be a file named "msipl.bin".
15. Copy "msipl.bin" into the folder called "msinst" that was extracted from the downloaded file.
16. In the Command Prompt, type cd c:\pandora\msinst
17. Type "msinst X msipl.bin" where X is the drive of your PSP. For example, my PSP is connected at O:\, so I type "msinst O msipl.bin".
    
    You should see a prompt like this. I guarantee that your stuff will be slightly different; it depends on how your computer is set up, what sort of memory stick you have, and so on. As long as you get the "Are You Sure? [Y]" prompt, you know that the msipl.bin file is OK.
    
    >>> C:\pandora\msinst\msinst O msipl.bin
    >>> PSP MS IPL Installer
    >>> Load IPL code msipl.bin
    >>> 241664 bytes(59 block) readed
    >>>
    >>> Target DRIVE is 7
    >>> Check partation Sector
    >>> boot status        0x80
    >>> start head         0x05
    >>> start sec /cyl    0x0004
    >>> partation type     0x06
    >>> last head          0x0F
    >>> last sec/cyl     0xB7E0
    >>> abs sector   0x00000810
    >>> ttl sector   0x000767F0
    >>> signature        0xAA55
    >>> Check BPB Sector
    >>> signature        AA55
    >>> Check free reserved sector:OK
    >>> Write ABS Sector 0x10 to 0x1E7
    >>> Are You Sure ?[Y]
    
18. Type 'y'.
    
    >>> y
    
    and you should see
    
    >>> Write MS BOOT CODE
    
    That means that you now have a "Magic Memory Stick".

Creating the "JigKick Battery"

1. Insert the battery you wish to use as your unbricker, and run "Pandora's Battery Creator" from the Memory Stick section of the GAME menu.
2. ***OPTIONAL - SEE NOTE*** Press Triangle to back up the contents of your battery's flash into a file on you memory stick. The program will automatically exit. Run "Pandora's Battery Creator" one more time. *Note:* This step is REQUIRED if you want to make this a normal battery again; otherwise it's optional.
3. Press X to turn your battery into an unbricking battery (a Service Mode battery). The program will automatically exit.

Unbricking and/or downgrading a PSP using your "Magic Memory Stick" and "JigKick Battery"

1. Insert the "magic" memory stick.
2. Insert the unbricker battery. Your wifi , memory stick, and power lights should all turn on temporarily, and a menu should appear.
3. Press X. After it checks the update file, you should get another menu.
4. Press X to write Firmware 1.50 onto the PSP.

Page and Download contents created/sompiled by elboffor