1. Bob Smith21's Avatar
    I had my Lumia 920 on the latest Developer's Preview firmware. I just used the Windows Phone Recovery Tool to reset the device, which completed successfully, but now I'm not sure if I'm still on Developer's Preview firmware or back to official AT&T firmware. How can I tell?

    firmware revision 3051.50009.1425.2001
    os version 8.10.12393.890
    03-21-2015 10:18 AM
  2. Harrie-S's Avatar
    I had my Lumia 920 on the latest Developer's Preview firmware. I just used the Windows Phone Recovery Tool to reset the device, which completed successfully, but now I'm not sure if I'm still on Developer's Preview firmware or back to official AT&T firmware. How can I tell?

    firmware revision 3051.50009.1425.2001
    os version 8.10.12393.890
    If you use the Windows Phone Recovery Tool you are not on preview anymore because this tool only has the official software version (so no preview) for your device.
    And on the MS website the version is the same as you have now.
    So you are on CYAN.
    Check below link and find your device so you can double check it by yourself.
    https://forums.windowscentral.com/e?...token=Khnd1S5Z
    gpobernardo likes this.
    03-21-2015 10:34 AM
  3. PepperdotNet's Avatar
    If you flashed it with a recovery tool, it is running an official release.
    gpobernardo likes this.
    03-21-2015 10:34 AM

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