how to revert Windows 10 to Windows 8.1 on nokia phone

[Aggie101]

Windows 10 was installed automatically after my phone was serviced. I really need to get back to 8.1, please!

 

[ak47jar3d]

http://wmpoweruser.com/how-to-roll-back-to-windows-phone-8-1-from-windows-10-mobile/