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!

  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 and for ways to resolve your issue.