1 Reply Latest reply: Mar 26, 2013 6:20 AM by lllaass
angieegirl Level 1 Level 1 (0 points)

My ipod touch software needed to be updated. I connected my ipod to the computer with itunes and it wouldn't let me update...the error message was 20. When I connected my ipod again I couldn' do an update and restore process and the error message was 1604. What do I do???

iPod touch
  • lllaass Level 10 Level 10 (169,210 points)

    Error 1604

    This error is often related to USB timing. Try changing USB ports, using a different dock connector to USB cable, and other available USB troubleshooting steps (troubleshooting USB connections. If you are using a dock, bypass it and connect directly to the white Apple USB dock connector cable. If the issue persists on a known-good computer, the device may need service.

    If the issue is not resolved by USB isolation troubleshooting, and another computer is not available, try these steps to resolve the issue:

    1. Connect the device to iTunes, confirm that the device is in Recovery Mode. If it's not in Recovery Mode,put it into Recovery Mode.
    2. Restore and wait for the error.
    3. When prompted, click OK.
    4. Close and reopen iTunes while the device remains connected.
    5. The device should now be recognized in Recovery Mode again.
    6. Try to restore again.

    If the steps above do not resolve the issue, try restoring using a known-good USB cable, computer, and network connection.