See the new success poll based off the bugfixed version: (current)http://forums.qj.net/f-psp-hacks-9/t...ion-68762.html
See the original success poll before attempting: (dated) http://forums.qj.net/f-psp-hacks-9/t...oll-68535.html
See this thread for discussion: http://forums.qj.net/f-psp-hacks-9/t...ion-68502.html
Here is a video of MrDank downgrading: http://www.youtube.com/watch?v=SuHZtIU0gb0
Before beginning, please be forewarned that downgrading of any kind runs the risk of bricking your PSP!
(Along with any other application that writes to the flash memory of your PSP.)
The below is also worth mentioning again:
This will not work on the TA-082 hardware, so don't even bother to try it if you have that hardware. This version will brick a PSP with TA-082 hardware, so please, do not try. To tell if you have the TA-082 check this picture: http://pspupdates.qj.net/uploads/art.../ta82spot1.jpg
From the Readme:
Instruction for the 1.50 user:
1) Copy the folders downhelper and downhelper% from the folder 1.50 HELPER folder to /PSP/GAME/ in your memstick.
2) Obtain the 1.50 update and put it in /PSP/GAME/UPDATE in your memstick.
3) Initiate the downhelper program. It will dump your flash and some files from the updater eboot to the memstick.
4) After that, the program will exit. You can now delete the updater from /PSP/GAME/UPDATE
5) You'll notice that you have a new folder in the root of your memstick called "DOWNDATER". That's the folder you'll have to send to a 2.71 user to downgrade.
- Note - This is the same DOWNDATER folder used for the 2.60/2.60 to 1.50 downgrade.
Upon either completion or finding this folder through your own means, you should be left with a DOWNDATER folder which includes the below.
This folder should contain two folders and two files:
- DOWNDATER\DUMP\ (containing the 1.50 dump)
- DOWNDATER\PRX\ (containing the 1.50 UPDATE .PRX files)
There should be 220 files total when checking the properties and it should be ~13 MB in size.
Do not ask for this folder/file on these forums as it is a violation of our Piracy Policy.
Instruction for the 2.71 user:
You are now ready to start the downgrade process. Please make sure that your AC adapter is plugged in and battery is charged past 50%.
1) Copy the files inside MS_ROOT to the root of your memstick.
- Note - This does not mean that you drag and drop the MS_Root folder to your memstick. First double-click MS_Root and once that opens, drag the contents to your memstick.
2) Wait someone with 1.50 to pass you a folder called DOWNDATER and copy it to the root of your memstick.
Your folder structure should look like the following:
- mem:/DOWNDATER/ <----(1.5 dump)
- mem:/d.bin <----(used with tiff exploit)
- mem:/PSP/PHOTO/hw.tif <---(tiff exploit)
(mem:/ being the root of your memory stick)
3) Go to the XMB photo viewer.
- XMB is an acronym for Cross Menu Bar, which is the main menu of your PSP.
At this point one of the following things will happen:
- You'll see a full red screen. This indicates that the downdater is doing its job. Wait for it to finish. (It can take a few minutes, so be patient.) When it's finished, the PSP will crash on purpose. Restart your PSP manually and you'll probably have a 1.50 if nothing went wrong.
- You don't see the red screen. This indicates that the downdater code has not started to execute. Even if the memstick blinks (or not), it doesn't matter! If the screen is not red, you can safely restart the PSP at this point.
This happens because of instability in the tiff. Don't worry, just restart the PSP and keep trying until you reach the red screen of downdate. The downdater code is NEVER executed partially. It's either executed totally or nothing.
Success depends on "luck," but usually the downdater will start to execute in an average of 1/10 times.
Things that may increase the probabilities:
- A fresh formatted memory stick.
- A 32 MB memory stick (and fresh formatted)
Change log: Added the newest version of the downdater2.71 file. (Bugfixed version)
- UPDATE: Fixed a bug that caused premature bricking if the hack to force the unassign/assign of the flash failed.