heyy guys can some1 help me out how to downgrade my ps3 from 4.50 to 3.55 with out using a E3 flasher ill be happy to here from u nice guys with a good answer

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I'm sorry to say, but I don't believe you can. You must have an E3 Flasher (at the moment) to downgrade.
Side-Note: If you have a super-slim PS3, then you are out of luck completely. You are not able to downgrade them at all.