Downgrading using ChickHEN

Discussion in 'PSP - Games & Content' started by Excellentnuke, Jul 5, 2009.

  1. Excellentnuke
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    Excellentnuke GBAtemp Advanced Fan

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    I found out that CFW can be installed on PSP 2k and PSP 3k without a Pandora battery by using ChickHEN. Can this also be used to downgrade CFW? I want to go from 5.02 GEN-A to 5.00 M33-6.
     
  2. raing3

    raing3 CNET_Richard

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    You can downgrade to CFW IF your 2000 doesn't have a TA-088v3 motherboard. Use this to check. If it is a TA-088v3 don't downgrade. If it isn't you can use Hellcats Recovery Flasher and the 500.PBP file to downgrade the PSP to 5.00 M33-6. The 500.PBP files should be placed in the root of the memory stick and the Recovery Flasher application should be placed in the PSP\GAME\RECOVERY folder.
     
  3. BKZ

    BKZ GBAtemp Regular

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    Actually you can't flash CFW on the 3K's or else it will brick, but you can use CFE(custom firmware enabler) on the 3Ks to play back ups.
     
  4. Excellentnuke
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    Excellentnuke GBAtemp Advanced Fan

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    So this can be done without a Pandora battery?
     
  5. raing3

    raing3 CNET_Richard

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    Yes it can be done without pandora although if you do not buy a Pandora battery you will have to be more careful not to brick while messing around with homebrew and stuff.
     
  6. Excellentnuke
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    Excellentnuke GBAtemp Advanced Fan

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    I'm getting an error when I try to re-flash. I choose 5.00 and get some sort of error.
     
  7. Law

    Law rip ninjacat that zarcon made me

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    It's probably error 546033. Not eating popcorn whilst trying to flash the PSP.

    Warning: Spoilers inside!
     
  8. Excellentnuke
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    Excellentnuke GBAtemp Advanced Fan

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    Never mind, just noticed you editted your post. So can anyone help me? It's a checksum error.
     
  9. raing3

    raing3 CNET_Richard

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    Yeah but it is only valid to people who have a TA-088v3 2k or a 3k. Which I asked in my first post. Although I'm not sure whether or not specialjerm is on 5.02 or 5.03, if he is on 5.02 GEN-A then he wouldn't need to use ChickHEN and also wouldn't have a TA-088v3. If he is on 5.03 he wouldn't be using 5.02 GEN and could possibly have a TA-088v3.

    If he has a TA-085v1 motherboard he can try and use PSP Tool to make a softmod Pandora battery and a MMS which will install 5.00 M33-4 where he can then upgrade to 5.00 M33-6.
     
  10. Law

    Law rip ninjacat that zarcon made me

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    I said it was valid, I didn't say anything about it being appropriate. But OP said CFW can be installed on a 2k and a 3k, but it can't. Whether he has a 2k or a 3k doesn't really have anything to do with BKZ's point, and he wasn't "suggesting" anything to the OP, he was merely pointing out the incorrect statement.
     
  11. Excellentnuke
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    Excellentnuke GBAtemp Advanced Fan

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    ... I didn't know it formats my flash. If it actually does, I just lost HOURS of data...

    Nevermind, I thought flash was memory stick since it's commonly referred to as flash0...
     
  12. thedicemaster

    thedicemaster GBAtemp Addict

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    memorystick is NEVER referred to as flash0.
    memorystick is ms0. flash0 is one of the writable sections(flash) of the chips in your PSP, the one which contains most firmware components i think.
     
  13. xist

    xist ΚΑΤΑ ΤΟΝ ΔΑΙΜΟΝΑ ΕΑΥΤΟΥ

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    Flash! - AH-ah - Saviour of the universe
    Flash! - AH-ah - He'll save ev'ry one of us


    Amd if you have a problem you'd do better if you can give details of exactly what you're doing and what problems you're encountering.
     
  14. Excellentnuke
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    Excellentnuke GBAtemp Advanced Fan

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    I got it to work last night by simply downloading a new 5.00 EBOOT.