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Thread: iTunes Error -1

  1. #1
    Default iTunes Error -1
    I just got a brand new iPhone 3GS which was on version 4.3.5 and tried preserving baseband while I updated to iOS 5 then I didn't have any baseband/Wi-Fi/Bluetooth and i Tried restoring normally with iTunes with stock firmware and I got error -1 and now I can't get back to homescreen or working the iPhone,What can I do please?Thanks in advance.

  2. #2
    Retired Moderator 2k1's Avatar
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    Error 1
    You are attempting to downgrade an iPhone from iOS 5 to iOS 4.x. To resolve, use either custom firmware created by PwnageTool/sn0wbreeze or use notcom's FixRecovery utility available on his site.
    On an iPhone 4 downgrading from iOS 5, use the option in TinyUmbrella to allow a baseband "upgrade" to bypass the error and go back to basband 4.10.1.
    Unable to downgrade. Try changing the USB port (the back one of chassis is better) and restart computer.
    The installed version of iTunes may also be too old. Update iTunes.

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