1. Windows Central Question's Avatar
    After downloading latest Windows 10 technical preview on my Lumia 520, i started to install it but my phone stuck at spinning gears and in some seconds screens goes black. then I restart my phone again the same gears stuck than screen goes black. what shall i do please tell me? i need my phone urgently so many important docs are in it. when i charge my phone it automatically restarts the installation again and again.
    09-06-2015 03:25 PM
  2. Zachary Boddy's Avatar
    Plug your phone into your computer and use the Windows Phone Recovery Tool to rollback to Windows Phone 8.1. It may not detect your phone right off so keep trying and be patient.
    My opinion, you should've backed up all your important files before even thinking about upgrading your phone, whether or not it was to a technical preview (especially to a technical preview).
    Skulls138 likes this.
    09-06-2015 05:15 PM
  3. Anthromg's Avatar
    I'm having the same issue with my 1520 but when I plug the device into my computer, Windows Phone Recovery Tool won't recognize it.
    09-11-2015 02:11 PM

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