Downgrade your PSP or resurrect your bricked PSP

[StrangerGuy]

Full details here.

No need for any more overpriced Lumines to downgrade AND you can breathe new life into that bricked PSP sitting in your cabinet (or Ebay). Plus it can downgrade ANY current and future firmware!

All this for just the price of one PSP battery. (No documented method yet to recover a converted battery AFAIK. Forget this whole paragraph if the method exists)

Please read the readme file for instructions, as always.

This is truly the mother of all PSP hacks.

 

[cw42]

Time to go look for a cheap PSP battery to buy, and one that's genuine... There's too many fake Sony parts online.

More info: http://forums.maxconsole.net/showthread.php?t=75785

I will add more are they are asked, and removed if they are fixed. Most of them taken from the original thread http://forums.maxconsole.net/showthread.php?t=75759

* If problems with formatting memory stick : Put mspformat.exe the C: and use Run, type cmd, on the black screen type cd c:\ and hit enter, type mspformat.exe DriveLetter (space in between these two)

* If problems with writing the IPL to memory stick: (make sure msinst.exe and the msipl.bin are in the C: ) use Run, type cmd, on the black screen type cd c:\ and hit enter, type msinst.exe DriveLetter msipl.bin (space in between these three)

* After executing msinst.exe (above note), you might get
"write MS BOOT CODE
C:\>". Ignore it you are done.

* (Linux Only) To do "mspformat" and "msinst": http://psp.jim.sh/fanjita/linux.txt

* There might by updates for bugfixes

* Nand backups are saved as nand-dump.bin but in order to be restored they need to be renamed to nandimage.flash

* Works on 1st an 3rd party batteries.

* 32 MB memory card are NOT supported, try anything higher.

* Once the a PSP is downgraded or unbricked using the 1.5 update in the root, the you have a fully installed 1.5.

* The 1.5 UPDATE.PBP can be replace with any other Official Update But NOT with a Custom firmware one such as M33's. First unbrick\downgrade (to 1.5) then upgrade through the XMB.

* In order to return Pandora's Battery to a normal one: Turn PSP on with Power Cable plugged in but Pandora's Battery and Memory stick out, once in the XMB but both of them in. Under GAME execute the Pandora's Battery Creator not the Firmware Installer. In the Menu, press [].

* It won't work in +4GB one because of the recovery firmware being 1.50 kernel based... however that's a matter of luck, it actually "could" work with a 8 GB, but not warranty of that.

* The downgrader of the recovery firmware already has the patch to patch only the key 5.

* For non-patched Key 5 TA-082/TA-086 PSPs, the recovery firmware itself, despite being 1.50 kernel based, can boot into ta-082+ without any keys patched (not even key 5), because it is patched directly at ipl level.

* It is unknown if it will work the PSP Slim & Lite.