Microsoft official shut down windows mobile. Therefore, in windows 8.1 mobile, we cannot connect to Microsoft account nor download apps. But windows 10 mobile still works. Here is the upgrade process of windows 8.1 to 10 mobile in 2020.
Almost all devices can be upgraded which have a minimum of 1 GB RAM. Internet connectivity over Wi-Fi is needed when upgrade. The device has enough free storage space to upgrade and the battery has over 40%. It is recommended to back-up contacts, photos, files etc. before the upgrade.
Eligible Models:- Microsoft Lumia 430, 435, 532, 535, 540, 640, 640 XL, Nokia Lumia 635, 636, 638,730, 735, 830, 929, 930, 1520, Nokia Lumia Icon etc.
- Download Over the software on your PC
- Run the downloaded OtcUpdaterZip.exe
- Run the otcupdater.exe
- Attach the phone to PC via USB cable
- The tool automatically checks and downloads the available update
- Remove the device after an update has started
If there are some errors while upgrading, go to WDRT and see if there is any update in the phone and when it gets updated then go to the OTC updater and it will work.
Send me an email or comment if you have any questions, I would loved to hear from you !