4 Replies Latest reply: Nov 3, 2011 10:07 PM by AustinLear
DevCol1284 Level 1 Level 1

Okay so.  I recently purchased an iPhone 4.  iTunes doesn't recognize the iPhone when I plug it in.  I have tried updating iTunes, I've tried unistalling and reinstalling iTunes and all the other associated iTunes programs.  I have restored the phone to factory defaults which iTunes recognized it and let me do it, however afterwards it would not recognize the phone and now I have a phone that can only call 911.  Please help me because I'm kind of at my wits end on this.


system info:

I'm on a PC Windows 7

iTunes version

iPhone 4 (black... if it matters)


Thank you

iPhone 4, Windows 7
  • AustinLear Level 1 Level 1

    If you haven't solved this yet this might help.. Put your iPhone 4 into DFU mode, this will prompt itunes to do a complete restore and may fix your problem (as it basically wipes the phone clean and leaves nothing)


    If that doesn't work you could try deleting old backups and resetting the sync history in the preferances of iTunes.


    If you need to know how to go into DFU mode contact me

  • DevCol1284 Level 1 Level 1

    Yea I have done a completely restore on the phone and iTunes DOES recognize it when it's in DFU mode, however it doesn't recognize it still afterwards in regular mode. =\

  • jxk405 Level 1 Level 1

    What does DFU mode mean? (sorry if this is obvious)


    I am having a similar problem (Windows 7, iPhone 4, iTunes 10.5).  iTunes no longer recognizes my iPhone, but does recognize my iPod.

  • AustinLear Level 1 Level 1

    Not sure if you guys have fixed this yet but my best offer of help would be to go and uninstall all iTunes related stuff (after properly backing up and consolidating your library) and then using a registry cleaner to clean things up, I recommend cc cleaner (not sure on the name) after that I'd install the latest iTunes and try that. This unfortunately has never happened to me but it sounds like the regular driver has been corrupted (there's a driver for DFU mode and one for normal mode. DFU stands for device firmware update.