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  1. csc0724's Avatar
    I have an iPhone 4 that magically blacked screen and will not respond to any button commands. with no display i can manage to get it to recovery mode and begin the restore process with iTunes. after the software download i get error message 1601 (unknown error). I've read that this error could be anything from a faulty usb cord to a bad version of iTunes. well i've tried everything i've read so far and i cant seem to get anything to work. this iPhone was jailbroke at the time of the crash. any insight or suggestions would be very much appreciated.
    2012-08-16 04:06 PM
  2. EVO's Avatar
    1600s errors although related to certain issues, but are not specific...

    the 1st thing I would try doing is checking your computer's HOSTS file to verify that the host entry "" is not there, if it is you must delete it and save the hosts file...

    secondly, were you attempting to restore to a custom firware, or did you let itunes download the firmware?
    2012-08-17 01:06 AM
  3. csc0724's Avatar
    Well to be honest with you, I don't know anything about all the file hosts or how to change it. I have a brand new iMac with mountain lion so I knew the iTunes version and all was good. I tried updating it with iTunes 5.1.1, not anything custom. I also have no idea what program was used to jailbreak it in the first place. Is there a restore program for a jail broke device?
    2012-08-17 10:21 PM
  4. EVO's Avatar
    itunes is the only program used for restoring iOS devices

    here's a video of how to edit the HOSTS file using a MAC:

    make sure """ is not in the HOSTS file
    2012-08-20 08:29 AM