"1600" error when attempting to downgrade

Discussion in 'Jailbreaks and iOS Hacks' started by MatrixPrime, Sep 19, 2009.

  1. MatrixPrime macrumors regular

    Aug 20, 2007
    I've been trying to follow the tutorials to downgrade my 3G back to 3.0.1, but in iTunes, I never get the 1510 error, I get a 1600 error. What do I need to do at that point?
  2. dZp macrumors 6502a


    Mar 29, 2006
    On a Mac ?
    Delete the contents (there should be a small .ipsw file) of the following folder:
    ~/Library/iTunes/Device Support/

    ~ = your user directory

    And try again. Worked for me anytime I got error 1600 trying to restore to a previous firmware.

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