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  1. #1

    Lightbulb PS3 3.66 downgrade help?

    hi guys , my ps3 is system cech3003A with firm 3.66

    how to downgrade 3.66 to 3.55?

    thanks dear

  2. #2
    you dont, you have to have ofw 355 or less to start with

  3. #3
    Join Date
    Oct 2010
    the model of your ps3 is too new. it came originally with firmware past 3.55 so you cant downgrade as yet sorry mate!

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