Going back to windows 8.1

[Thanasis Tzevelekos]

I have a Microsoft lumia 640 xl and is running the latest build of windows 10, but I want to roll back to windows 8.1 because my phone is so slow with windows 10 but before the update my phone was faster, what should i do?

 

[RumoredNow]

Download the Windows Device Recovery Tool (WDRT). It will flash your phone back to the last 8.1 Official.

https://support.microsoft.com/en-us/help/12379/windows-10-mobile-device-recovery-tool-faq

 

[Guytronic]

Roll back using the Windows Device Recovery Tool or WDRT for short.
This is a utility that is downloaded and installed on your PC.