Downgrading Your PSP
(Infamous TA-082 Version)
By: Alex Hardt
Foreword (PLEASE READ):
This guide helps you successfully downgrade to firmware 1.50 and then up to 3.40 OE-A made by the almighty Dark_AleX with the scary and mysterious inner workings of a TA-082 motherboard psp. There is always a chance to brick but if you follow the directions EXACTLY there is a very good chance you won’t; ether way, I am not responsible for any bricks!!! If you do not know what a TA-082 motherboard is then you should not be reading this guide until you have further knowledge on the subject.
Simply put, the psp is a computer and has only one thing holding it back. SONY©. They hate people trying to run homemade code or “Homebrew” on their precious psp. That is thought to be the reason for creating their TA-082 motherboard. Convention downgrade methods WILL brick the psp. No questions asked. Trust me, I did it to mine
Chapter 1: The Upgrade to Downgrade
Chances are, if you got a new psp, it will be FW 2.60, 2.50, 2.71. If you are above that, for the time being, you’re SOL. Our FW target is 2.71. If you are already at FW 2.71 then skip this step. Go to this link and DL it. Rename the file to EBOOT.PBP and place it into your PSP’s memory stick in the folders PSPGAMEUPDATEEBOOT.PBP . If you don’t know how to run it then go find out how. If you are already at FW 2.71 then skip that step. Next, we must install HEND, another great invention thanks to Dark_AleX.
Chapter 2: Installing and Running HEND
HEND is an acronym for Homebrew ENabler + Devhook. You don’t need Devhook for this so don’t bother with it. MAKE SURE YOUR PSP IS PLUGGED IN NO MATTER WHAT THE BATTERY LEVEL IS! What HEND does is exploit the SONY programmer’s flaw, allowing the image file, TIFF, to run unauthorized code when launched, enabling us to write to flash. Although writing to flash is usually dangerous, HEND is safe to install, because it performs many checks to make sure it is ok to write to flash. Download it from here. When you open it, there will be a lot of folders; however, you only need MS_ROOT. Open that and extract EVERYTHING from that and paste it to your memory stick. When you open your psp drive, it should look EXACTLY like this. Now go to your PHOTO menu on the psp and open up the HEND folder. Your psp will freeze and your memory stick light will flash a lot and your screen should turn blue within a couple of seconds and then if it was a successful flash, the screen will turn green, if not red. The psp will restart either way and it will be ok if red. IF RED DO NOT PANIC! IT JUST MEANS IT DID NOT WRITE TO FLASH SO FLASH WAS NOT HARMED!! If it was red just try again. And again, and again, and again. If it doesn’t work the 3rd time, try to recopy the files. It took me like 20 tries. If it just hangs, hard reboot the psp by holding the PSP’s power button up for ten seconds. When it finally goes green, go back to the PHOTO folder again and the psp will restart and then HEND is running. Congrats!
Chapter 3: Preparation for 2.71 1.50
Ok so you’ve got the patients to make it all the way here. Download the TA-082 downgrader from here. Copy the UPDATE and idstoragechange folders into /PSP/GAME/ on your memory stick. Get the official SONY 1.50 EBOOT from here and put it in the /PSP/GAME/UPDATE folder with the name of UPDATE.PBP. Run the idstoragechange. It needs 75% battery. It changes some data on the psp necessary to downgrade to 1.50. The program will exit to the main menu.
Chapter 4: The Downgrade to 1.5!!(Cross your Fingers!)
W00T you made it this far! Now run the generic downgrade, which will show in the menu as "Update X.YX”. This will downgrade your psp. The generic downgrader will need 75% battery. At the end, it will ask you to press X to restart the psp. Do it. If all went fine, you'll receive a blue screen telling you to press O. Do it, and reenter your settings. Welcome to 1.50. If things didn't go that fine, you'll have a non-functional psp, aka brick. You accepted that risk, remember.
Chapter 5: The Upgrade to 3.40 OE-A!! (Cross your Fingers Again!)
YES. 3.40 OE-A is compatible with the TA-082 and will upgrade successfully without a brick. PROVIDING YOU DO EVERYTHING I SAY. Copy oeupdmaker and oeupdmaker% to /PSP/GAME. Get the 1.50 here and 3.40 here, and copy them in the oeupdmaker directory with the names 150.PBP and 340.PBP. Run the program, and it will generate the DATA.DXAR file. Copy 340oeflasher and 340oeflasher% to /PSP/GAME and move the DATA.DXAR to 340oeflasher directory. Run the flasher and CROSS YOUR FINGERS!!! Now, if all went well, you should have a 3.40 OE-A TA-082 PSP!!!