[GUIDE]Downgrade all CFW using the RECOVERY Files

25 Dec 2007 10:40 (Edited: 25 Dec 2007 10:40)

**********************************************WARNING*********************************************
The recovery files for OE/M33 are different from the recovery files for 3.71 M33 so read the instructions carefully...
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For OE/M33
First download the RECOVERY Folder for OE/M33

RECOVERY FILES


Steps:
-Download the files required for you to downgrade your PSP found above.
-Extract the files to where ever you want.
-Format your PSP MS and put your PSP to USB Mode.
-Now in your PC, go to [PSP]>[GAME] and since you just formated your MS there you should nothing there.
-Go to the folder you just extracted, double click it and drag and drop the RECOVERY folder to the GAME folder.(It's name should be in CAPS)
-Now exit USB Mode and turn the PSP COMPLETELY off (not in sleep mode) Then open it up again but this time open it while holding the R Trigger.
-You should now be in the Recovery Menu, now scroll down and select
"Run program at PSP/GAME/RECOVERY/EBOOT.PBP" (without quotes)
-Now once it loads up press the X (Cross) Button to downgrade your PSP back to 1.50. You could cancel it by pressing the R Trigger.
-Now wait for it to write the files necessary for you to go back to 1.50
-Once it finish writing the files restart MANUALLY.
-Now once it boots up you'll get this BSOD and just press O (Circle) Button until it reloads again.
-It will then let you configure the settings for your PSP like time, date, etc..., now once your finish on that go to [SETTINGS]>[SYSTEM SETTINGS]>[SYSTEM INFO.] and you should now see System Software: Version 1.50

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Now on with 3.71 M33
Download the required files for you to downgrade.

DOWNGRADE FILES
1.50 EBOOT


Steps:
-Download the files required for you to downgrade your PSP found above.
-Extract the files to where ever you want.
-Now go to your PSP and format your MS, after that put your PSP in USB Mode
-Now in your PC, go to [PSP]>[GAME] and since you just formated your MS there you should nothing there.
-Now go to the folder you just extracted and there should be a folder called UPDATE there (all in CAPS), place that folder in the GAME folder of your PSP.
-Go to the other folder you just extracted and there should be one file there, the 1.50 Eboot. Rename that file to UPDATE (all in CAPS) and place it inside the UPDATE Folder found at GAME folder of your PSP.
-Now exit USB Mode and in your PSP go to [GAME]>[Memory Stick]> and there should be a program there called "PSP Update ver X.YZ" (without quotes)
-Run the program and wait until it loads up.
-Now once it loads up press the X (Cross) Button to downgrade your PSP back to 1.50. You could again cancel it by pressing the R Trigger.
-Now wait for it to write the files necessary for you to go back to 1.50
-When it's finish downgrading you will get this BIG OK and at the bottom you could see
"Press X to restart the PSP" (without quotes), so do it, Press X (Cross) to restart the PSP.
-Now again once it boots up you'll get this BSOD and just press O (Circle) Button until it reloads again.
-It will then let you configure the settings for your PSP like time, date, etc..., now once your finish on that go to [SETTINGS]>[SYSTEM SETTINGS]>[SYSTEM INFO.] and you should now see System Software: Version 1.50


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Thanks for reading and if there are any questions please leave a comment.
-N01NOob :)

List of my blog entries

• [GUIDE]Downgrade your PSP using Pandora's GUI v1.5 (27 Dec 2007)

User comments

• by Rogdrik @ 26 Dec 2007 1:50

  Cool Guide Fool..!!!
  
  Great Job...;)

• by N01NOob @ 26 Dec 2007 5:47

  Thanks.. It's good thing you noticed it..
  :)

• by Rogdrik @ 20 Mar 2008 12:10

  Yup!

• by N01NOob @ 31 May 2008 8:22

  Lol

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