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Thread: how to downgrade iphone 3gs?

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hi i hv iphone 3gs 32 gb model no A1303. i accidently update cydia and now it is showing no service. I checked for modem firmware. It has upgraded to
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  1. #1
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    Default how to downgrade iphone 3gs?
    hi
    i hv iphone 3gs 32 gb model no A1303. i accidently update cydia and now it is showing no service. I checked for modem firmware. It has upgraded to 06.15.00. i dont remember my original firmware it was 5. something. Can i know my original firmware and then how to downgrade it

  2. #2
    2k1
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    What is the first five digits of ya serial
    Number?

  3. #3
    Green Apple
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    use redsn0w 0.9.14b2 jailbreak and downgreda bb.

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