1. Windows Central Question's Avatar
    I have a Lumia 520 on which I installed Windows 10 Preview. After install, I found that it was buggy, slow, and unacceptable. I decided to revert back to 8.1.

    I tried to use the Nokia Software Recovery Tool but it said the phone was not supported. Downloaded the Windows Phone Software Recovery Tool, and it was able to get it to recognize the device, but the installation failed three times. Eventually, the screen went black and it won't turn on. I tried everything I could find online, such as Power + Volume Down but nothing worked.

    What should I do?
    04-12-2015 10:48 PM
  2. BigtheFatTiger's Avatar
    I don't have a solution for you, sorry, but I was wondering if you were able to get to the Settings menu/app? After I installed the WP10 preview on my 520, besides being very slow, I was unable to open Setting at all. I pressed the button/tile/shortcut in the notification area and it just sits there like I didn't even press anything.

    Perhaps I'll try to recover mine to see if I come across the same issues.

    I'll let you know.
    04-12-2015 10:58 PM
  3. hotphil's Avatar
    There's a good few threads in the Forums on the subject. From what I can make out, you're on the right track, but it may take more attempts to get one of the recovery tools to recognise the device.
    04-12-2015 11:12 PM
  4. Manojkumar_25's Avatar
    Use Lumia recovery tool 5.0.7 to downgrade.
    Don't use wind windows phone recovery tool
    04-12-2015 11:15 PM
  5. Zuchit's Avatar
    Bricked my Lumia 525 when using Windows Phone Recovery Tool.....

    I believe it can be fixed..... had to buy a cheap chinese android phone for whatsapp and calling...
    04-13-2015 10:35 AM
  6. JTODD99's Avatar
    I updated my Lumia 925 to the windows 10 technical preview and what a mistake it was. Buggy and glitchy as all hell. Then after an hour it would not recognize the sim card and for all intents and purposes bricked my phone. I used the Lumia recovery program to roll back my phone to 8.1 have not had a problem since..

    I warn everyone that wants to try this that you could potentially ruin your phone. I got lucky with the recovery program but all are not so lucky.. My advice is to wait till the official launch and even then I might not upgrade because what I saw and experienced with windows phone 10 is not an improvement and completely changes to many things that do not need to be changed..

    You have been warned , install the technical preview if you want but I feel you will be disappointed and could lose your phone all together .
    04-14-2015 02:45 AM
  7. hotphil's Avatar
    If you'd hard reset it and then set it up as a new device, I bet your experience would have been better.
    04-14-2015 02:51 AM
  8. JTODD99's Avatar
    I did several hard resets and none fixed my sim card issue. The update ruined my phone , if the recovery tool hadn't worked I would have had a useless Lumia 925.
    04-14-2015 03:07 AM
  9. hotphil's Avatar
    Yep. When installing the Technical Preview on the phone there's two large warnings that installing it may permanently damage hardware.
    04-14-2015 03:18 AM
  10. YYZ Richard's Avatar
    I had the same problem when installing the WINDOWS PHONE 10 preview.
    The phone heats up (like stove hot), drains the battery and shutdowns. Once it cools down, it restarts again and the same thing happens over-and-over again.

    You must keep your phone temperature down, so the phone doesn't shut off:
    1. Fill a bowl with ice
    2. Cover the bowl with a plastic bag (I used a grocery bag)
    3. Place your phone on top of the plastic bag, and keep it connected to the power. Make sure the phone doesn't slip into the ice
    4. Restart the phone, and the setup will continue.

    If your phone is already on infinity loop, skip step 4, just let the phone resting on top of the bowl. It's a lengthy process, don't sit around expecting to get ready in 1 minute.

    Good luck
    04-17-2015 01:20 PM
  11. hotphil's Avatar
    Good luck with that
    04-17-2015 07:15 PM

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