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Thread: Downgrading from Firmware 6.3X to Firmware 6.20

  
  1. #1
    flofrucht is offline -Hacks Member
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    Thumbs up Downgrading from Firmware 6.3X to Firmware 6.20

    Because some guys asked me about a TUT how to Downgrade from Fw 6.3x, I made one.

    Works on PSP 1000, 2000, 3000, 4000 (newer 3000) or PSPgo!

    You can downgrade with this downgrader from Firmware 6.39 to Firmware 6.20. From Firmware 6.38 to Firmware 6.20. From Firmware 6.35 to Firmware 6.20. And from Firmware 6.31 to Firmware 6.20.

    Supported models:
    PSP1000 [01g], PSP2000 [02g], PSP3000 [03g / 04g /07g /08g /09g], PSPGo[05g]


    Unsupported models:
    Nothing! (yet)


    Identify your PSP model:

    Nothing is easier than identifying your PSP's model:
    1) Download PSP Module Checker v1.0 *SIGNED*
    2) copy the extracted folder to PSP/GAME
    3) Launch PSP Module Checker 1.0 via GAME -> Memory Stick.
    4) Now you'll see your PSP's model.




    I tested it by myself on a PSPgo with Datecode 9C and Firmware 6.38 ;=).

    For this, you will need:
    - PSP 1000, 2000, 3000, 4000 (newer 3000) or PSPgo
    - a supported PSP model
    -6.38/6.35/6.31 -> 6.20 Downgrader By Davee, ported to 6.38 by some1. V3.1
    -Official PSP Firmware 6.20 for PSPGO
    -Official PSP Firmware 6.20 for PSP 1000/2000/3000/4000
    -Official PSP Firmware 6.35 for PSPGO
    -Official PSP Firmware 6.35 for PSP 1000/2000/3000/4000

    Tutorial

    1.Extract the downloaded archive.

    2.Ms0: (ef0:-) / PSP / GAME / copy the Downgrader to this folder.
    Ms0: (ef0:-) / PSP / GAME / UPDATE / copy the official Firmware 6.20/6.35 Updater (EBOOT.PBP) for PSP 1000/2000/3000/40000 or PSPgo to this folder.

    If you have anything lower than an 07g place the 6.20 update in PSP/GAME/UPDATE.
    If you have an 07g or an 09g, place the 6.35 update in PSP/GAME/UPDATE.

    3.It should look like this:


    4.Launch the Downgrader from your XMB.



    5.Press X to start the SCE Updater. (PSPgo Users: Press "X" twice)


    6.The 6.20 updater will appear, update as always.


    7.Now a BSOD ("Blue Screen of Death") will appear:


    8.Press O to solve the problem and you're done.

    Did you get a white screen?
    Press Start + Select + Triangle + Square while your PSP boots up!

    Updater problems?
    Spoiler:
    Hummm...did you get this screen?


    It looks like your Updater eboot is not valid. ReDownload it!

    Reasons Why You're getting "Checksum MD5 Mismatch"

    most likely you
    - downloaded the wrong firmware file
    or
    - named the firmware file incorrectly
    or
    - put the firmware eboot in the wrong folder


    9. Congrats...now you're on OFW 6.20, hope you enjoyed it .

    It took me 1 hour to write and test it and to make screenshots, it isn't really difficult to say just thanks .

    -flofrucht


  2. #2
    Syper is offline -Hacks Newbie
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    i have psp go 9c is it okay?

  3. #3
    fowler002 is offline Senior Member -Hacks Monk
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    Quote Originally Posted by Syper View Post
    i have psp go 9c is it okay?
    did you fully read whats written? your answer is in there somewhere

    flo are you going to update the d/l link for the downgrader with the version that supports 9g?

  4. #4
    flofrucht is offline -Hacks Member
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    Big, Big, Big Update!
    Thread update v2:
    *added new downgrader version (V3)
    *added 4 new pics
    *added more text
    *added a way to identify your PSP model on a OFW
    *added a help tut if you get a white screen

    cheers. flofrucht for all my fans & lovers ;p

  5. #5
    Neon Knight's Avatar
    Neon Knight is offline -Hacks Guru
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    6.The 6.20 updater will appear, update as always.
    What about 07g-09g users? I think they must downgrade to 6.35.

  6. #6
    stonoo is offline -Hacks Newbie
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    where i can find this
    Ms0: (ef0:-) ??!!!

  7. #7
    Neon Knight's Avatar
    Neon Knight is offline -Hacks Guru
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    ms0: is the content of the Memory Stick
    ef0: is the System Storage (internal memory) of PSP Go

  8. #8
    Ryu's Avatar
    Ryu
    Ryu is offline Super Mod of the Brood -Hacks Titan
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    Quote Originally Posted by stonoo View Post
    where i can find this
    Ms0: (ef0:-) ??!!!
    Ms0:
    it MS drive

    ef0:
    is the psp go drive

    version 3.1 of the Downgrader is out

    v3.1: Fixed idiot bug for 6.38 I created when adding 6.39

    PSP 1.5 got on USA first day is was 1.5 NOW 4.01 M33-2 -> 5.00 M33-6(1.50 addon),
    Old PS3s: PS3 60GB FW:3.41(2nd ps3 YLoD, 1st, YLoD)
    New PS3:
    Slim 160gb 01-21-2011 Working
    was 3.40 OFW->3.60 OFW

    2nd PSP : PHAT 5.50 GEN-D2
    3rd PSP : Sliver 3000 Starting OFW:4.20 (NEW bought NEW on 11/28/2010)
    It a good idea to have "Hide extensions for known file types" in Folder Options(under Tool) unchecked (turn on extensions)

    3DS FC:0301-9790-8019

  9. #9
    jadex234's Avatar
    jadex234 is offline -Hacks Member
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    Is It For OFW and CFW?
    Add Some Reputation If I've done a good JOB !
    ---------
    6.39 ME-2 User

  10. #10
    theEvilOne is offline Gone fishin -Hacks Titan
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    Quote Originally Posted by jadex234 View Post
    Is It For OFW and CFW?
    It's for official firmware. If you're already on custom firmware then what's the point?

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