How do I downgrade OFW 6.20 to any CFW?

aung oo March 6, 2010
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I have 2001 psp with OFW 6.20. I want to downgrade to any CFW. Is it possible?
I tried several methods on the internet and failed every time. My psp won’t turn on after I put MMS and Pandora battery. I don’t know what to do. HELP!

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  1. itachi
    March 29, 2010 at 12:40 am

    my psp was hacked to cfw but it uograded itself without me doing anything plz help

    • Tina
      March 29, 2010 at 7:39 am

      Please post this as a new question and if possible provide more details as to what happened.

  2. Anonymous
    March 8, 2010 at 2:56 pm

    Are these the steps you followed:

    1. UNplug the AC charger
    2. Insert MMS
    3. HOLD the left shoulder button
    4. Still holding the L button : insert (fylly charged) Pandora

    Most of the time the issues are: Your magic memory stick was made incorrectly or poorly. Most of the time, its a formatting problem, vista problem, magic stick problem, or you did not hold down the correct button while you pop your pandora in.

    Do check out http://www.makeuseof.com/tag/how-to-downgrade-your-psp-and-upgrade-to-a-custom-firmware-part-one/ and http://www.makeuseof.com/tag/how-to-downgrade-your-psp-upgrade-to-a-custom-firmware-part-two/ for ways to resolve your issue.