1. shehryaramjad's Avatar
    So I recently enrolled my Lumia 620 for the Windows Insider Program and chose to get the Builds on Fast Ring. It had been lying around and it was still on Windows Phone 8.0. Before I enrolled my device, I did a few updates. First one was an update to WP8, then it updated to WP8.1, then WP8.1 GDR1. After enrolling my device, I successfully downloaded the Build. When the update started installing, the first time the progression bar beneath the two gears moved forward a bit. Then my phone shut off for no reason, it even had sufficient battery. After that the phone keeps shutting off after ~30 seconds. It's not moving beyond the two gears. Any help at all would be appreciated.
    07-06-2015 09:19 AM
  2. N_LaRUE's Avatar
    As mentioned many times on these forums, the W10 TP can cause issues.

    You're best bet is to use this - How can I recover/reset/restore my phone software? - Microsoft - UK

    And start again if that is what you wish to do.
    Laura Knotek and RumoredNow like this.
    07-06-2015 09:42 AM
  3. EL620's Avatar
    Use the Windows phone recovery tool. I updated my spare 620 to 10149 and it runs smoothly. Previously had 8.1 update 2 on it which was also great.
    07-06-2015 11:47 PM
  4. shehryaramjad's Avatar
    Use the Windows phone recovery tool. I updated my spare 620 to 10149 and it runs smoothly. Previously had 8.1 update 2 on it which was also great.
    I would try that but the phone keeps turning of after every few seconds, which causes the phone to lose connection to the PC, so I can't do that, unfortunately.
    07-08-2015 07:48 AM
  5. EL620's Avatar
    Normally if you choose 'My phone won't turn on' and wait till the app says 'connect only one phone'

    Plugging in the usb cable while the device is off will automatically switch it on then lock the connection after it vibrates to begin firmware installation.

    If you already have the files, it shouldn't take long to verify. If Not, unplug and wait till it downloads before trying.
    07-09-2015 02:07 AM

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