Originally Posted by ingolfstar
sorry i have seach all over but cannot fint anything. 1 question.
Is it possible to downgrade 4.25 to 3.55 and play backup games? with out open the ps3? 
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from the opening post :-
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The Ultimate Fool Proof Guide:
Ps3 hardware downgrading
current firmware you can downgrade from = 4.25
If your current firmware is above 3.55 then you can ONLY downgrade via a hardware flasher
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