That's right. Straight off the press of Team C+D with the likes of the recently retired Dark_Alex, ALL PSPs are now downgradable from any firmware, including any firmware Sony releases in the future.
This software release that doesn't use any copyrighted code from Sony turns your battery pack into the Sony service battery pack that they use to unbrick and downgrade PSPs when you ship them off to repair.
After setting it up (you will require a friend with a homebrew enabled PSP) you can use the memory stick and battery pack to make your bricked PSP enter 'service mode', you will also be able to downgrade your PSP.
This is a HUGE announcement. It means PSPs can be unbricked and they can all be downgraded. Now the only thing remaining is to see if Sony makes a hardware revision for the PSP Slim that stops this, if not, Sony just lost the homebrew fight.
Originally Posted by Dark_Alex:
Yeah, the "Service Mode".
This has been the work of the alliance of a lot of developers externally known as "C+D": Nem, joek, Fanjita, Chris, jim, psp250, ditlew, Skylark, Dark_AleX, mathieulh, tyranid, adrahil and Booster.
The battery lets to downgrade any firmware version (including those that Sony releases in the future), and to unbrick bricked psp's (whatever bricked by software psp, not only the ones bricked by that distinguished mentally-challenged fellow of Serafin), in all current hardware. Of course, we cannot be sure about future hardware, but the Firmware Update game has finally come to the end for all current psp's.
