How can I install Windows 8.1 Denim on Windows 10 on my Lumia phone?

[Windows Central Question]

i want to install windows 8.1 denim on windows 10 in my lumia phone

i have recently installed windows 10 on my Lumia 720 mobile.
due to performance issues i want to rollback to 8.1

 

[slimchap]

Re: i want to install windows 8.1 denim on windows 10 in my lumia phone

You will have to use Windows Phone Recovery Tool. Just search for it via Bing or google.

 

[HeyCori]

Re: i want to install windows 8.1 denim on windows 10 in my lumia phone

Direct link to the tool from Microsoft

http://go.microsoft.com/fwlink/?LinkID=525569

Main page where the tool is from

How can I recover/reset/restore my phone software?