2.71 (ta-082&ta-086) downgrader corruption free

[the begginer]

Description:
This will downgrade your psp without problems like brightness problems and battery problems.
I AM NOT RESPONSIBLE IF YOUR PSP BRICKS.

Changing Idstorage and Downgrading always runs the risk something goes wrong and bricks your psp. Use of these files , requires that you accept those risk, and
understand you do so at your own risk.

Download it here

Release notes

The files here were designed to downgrade a 2.71 ta-082, or ta-086. The included 1.5 Enabler is the latest as of 03/11/07. 1.5 enabler does NOT corrupt any keys other then necessary to run the 1.5 FW. It is also easily reversed if you choose not to run Custom Firmware any more. (This requires another file just to keep it safe for the newbies) The source files for 1.5 enabler are included.


This tutorial is only for Ta-082 or Ta-086 2.71 downgrading to firmware 1.5.

To verify you have a Ta-082 or Ta-086 check my guide [http://www.pspmod.com/forums/hardwar...-you-have.html


PLEASE NOTE: YOU MUST HAVE YOUR PSP CHARGER IN AT ALL TIMES!
1.Remove your umd while downgrading.
2.Do not power off During downgrade!
3.Do not use fake memory cards to downgrade or upgrade see link below to identify fakes.
Donot use fake memory cards for OE installs - eXophase Forums

Note: If at some point your screen goes black for more then a few seconds Hit the brightness key gently a few times. Be careful not to bump the power or other buttons. In some cases the brightness goes to off.

1. Before you start, format your memory stick and reset your default settings.
A. Format MS by going to System , Format Memory Stick. press X
B. Push down to restore Factory Settings

2.Create a USB connection between your PSP and computer.

3. Download the official Sony 1.50 eboot and rename it to UPDATE.PBP, and put it in the MSroot/PSP/GAME/UPDATE folder of this download with the name of UPDATE.PBP
official Sony 1.5 eboot ** Download latest PSP utilities, tools, cracks and hacks.

4.Copy the contents of the MS_root folder to your memory stick root, click yes to overwrite. Do not put the readme on the psp.

5. Run HEN-D if you are not already running it.
Simply goto photo and try to display rand. The psp should very briefly display a green screen. If it displays a red screen try again. Once you get a green screen proceed. (note rebooting your psp deactivates hend)

6. Execute the 1.5 enabler on the PSP. It needs 75% battery. It will verify/make your psp able to run 1.5 and enable downgrading the TA-082 or TA-086 PSP.

7. The program will exit to the XMB. Now run the generic downgrade, which will show in the XMB as “Update X.Yz” on the PSP.

8. The generic downgrader will also need 75% battery. IT will downgrade your PSP to 1.50.

9. At the end, it will ask you to press X to restart the PSP. Do it.

10. If all went fine, you’ll receive a blue screen telling you to press O. Do it, and re-enter your settings. Welcome to 1.50.
I have tried it and confirmed it works perfectly.

Credits:
TA-082 downgrader by Dark_AleX/Mathieulh/Harleyg
1.5enabler by Chilly Willy
Original readme's adapted by XsavioR
photo thanks to Calo edited for content
proof of concept: Stapol, Vad

[poporo]

great guide the beginner... dishing them out as usual ^^

[the begginer]

this is a good downgrader because it doesnt mess around with the idstorage and it wont corrupt it.

[Gameunreal]

yeh it does mess around with idstorage as it has to corrupt key 5. that si enough to cause the bug, although its really rare.

this shoul be in the ultimate downgraders thread

[frankenberry7]

Do you keep the USB cable hooked in the entire time? Are steps 5-10 all done from the XMB?

[Gameunreal]

no the usb cable is just necessary to transfer data to the ms

[frankenberry7]

thanks, man. btw, the <<MY SPACE>> link in your sig is currently a little messed up.

[loki6901]

Mine shows a blue screen not green wat do i do?

[loki6901]

sorry for dubble post but it worked GREAT!

[the begginer]

hey glad to hear you are the second to try it because i tried it and it worked.

[rick78]

THANKS! it worked.
2.60 -> 2.71 -> 1.50

[the begginer]

the third one yes great results.

[Seabass]

Got to step 7 and when I try to run the update it says "The game could not be started. (80020148)"

Is it bricked? Is their anything i can do to fix this?

[the begginer]

is it in the right folder and is hend running.

[SunDoobie]

This guide is perfect for me and have bookmarked this page. I just bought a PSP with a 2.6 TA-082 last week. I havn't tried the downgrade because I do not want to brick my PSP before my long flight to Asia which would defeat the purpose of me purchasing a PSP in the first place. Although when I come back, I will definitely read up and attempt this downgrade.

Question, there is a a Easy 2.71 TA-082 Downgrader, Filename: 2.71_TA-082_EASY_Downgrader_0.1_by_csfreakno1.zip. What is the difference between your method and this easy downgrader?