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What if someone to edit the 3.55 ofw to make it look as if its the 3.56. What i mean is when you update it says the firmware your trying to update to. So if someone wants to downgrade 3.56 to 3.55 you can do that. i dont know just a thought.
and maybe to access psn on 3.55 we can copy the online data on 3.56 and use it to play online.