Build 10080 of Windows 10 Mobile, like most of the other builds of the Operating System, was far from stable and caused a number of different problems on the Windows Phones that were updated to it. The most significant of the many issues that came with build 10080, however, was undoubtedly the fact that many Windows Phones got stuck in a reboot loop shortly after they were updated to build 10080. Fortunately though, if your Windows Phone is stuck in a reboot loop after being upgraded to build 10080, you can use the following methods to try to get the device out of the reboot loop or (if that doesn’t work) restore it back to the version of Windows Mobile that was previously running on your device:
Method 1: Perform a Hard Reset Using the Hardware Keys
When a Windows Phone is in a reboot loop and keeps on rebooting constantly, you (obviously) can’t access the software menus that can be used to reset it. However, what you can do is perform a hard reset on the device using its hardware keys. First and foremost, you need to get the device to power down completely; removing and reinserting its battery should do fine. Once you have powered the device off, you need to:
Press and release the Power This will make the device vibrate.
As soon as the device vibrates, press and hold down the Volume Down
Release the Volume Down button when an exclamation mark appears on the screen.
Press the following buttons one at a time in the exact same order:
Volume Up > Volume Down > Power > Volume Down
The device will then vibrate, reboot, show the Nokia flash screen and then go to the spinning gears install screen. Once the spinning gears process completes, the device will be reset and taken out of the reboot loop.
Method 2: Recover Your Device using the Windows Phone Recovery Tool
If Method 1 does not work for you, the only other solution you can try to fix a Windows Phone that is stuck in a reboot loop after installing build 10080 of Windows 10 Mobile is to recover the device using the Windows Phone Recovery Tool (WPRT) and revert it to the version of Windows Mobile it was running on before the update to build 10080. WPRT is a revolutionary software tool that Windows Phone users can use to recover their devices after something goes wrong following an update or a clean install. To recover a Windows Phone using WPRT, you need to:
Download the Windows Phone Recovery Tool and install it on a computer.
Connect the affected Windows Phone to the computer via USB.
If WPRT fails to detect and recognize the Windows Phone and does not start downloading and installing the right drivers automatically, click on Phone Not Detected and follow the onscreen instructions that follow.
Once the required drivers are downloaded and installed, WPRT should successfully detect and recognize the device. When the program does detect your device, follow the onscreen instructions that follow.
WPRT will then start downloading the latest update for the device connected to the computer. Let WPRT do so.
Once the Windows Phone Recovery Tool has downloaded the latest update, simply follow the onscreen instructions and the program will start recovering your device.
WPRT will recover the device, reset it and then boot it up, after which you can start setting it up.