Microsoft last March has released the Windows 10 Mobile upgrade for older devices which was made available by downloading the Upgrade Advisor app from the Windows Store.
Now currently the company has shut down the service after confirming that only 13 devices will be getting the Windows 10 Creators Update for Mobile. The app is still available for download via the Store though but will show an error when trying to check if the device is available for a Windows 10 upgrade.
The announcement by the company that only 13 devices are eligible for getting the Windows 10 Creators Update officially ends the support for all Windows Phone 8.1 devices except the Lumia 640 and 640 XL.
However users with the non supported device will still receive updates via the Release Preview Ring of the Windows Insider Program. Microsoft hasn’t yet updated any of the factory images that are available through the Windows Device Recovery Tool.
Hence Users are advised not to reset their phones since the users currently don’t have a proper upgrade path and will have to stay on Windows Phone 8.1.