1. thegreataxis's Avatar
    Hi all,

    I've been in the past few days working hard to find a way to upgrade my iphone 3.1.2 to the 4th version using my Windows 7 PC. I've followed the guide on this site, it didn't work (1604 error). I've then searched the web far and wide to no avail.

    I suspect it is because my iPhone is blackra1n jailbreak, so when I turn the power off, straight to recovery mode.

    I've tried using my original cable, using iREB (RC4) for DFU and so many I forgot what.

    Oh, and I've tried iTunes 9.1, 9.2 and the latest version.

    When everything fail and want to use my phone again, I just run blackra1n again to get out of recovery mode, and it works.

    Can anyone help?
    2011-05-13 02:15 AM
  2. i.Annie's Avatar
    Have you tried to use redsn0w for the pwned DFU mode?

    Are you trying to restore to 4.3.3?
    2011-05-13 03:38 PM
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