How to downgrade from RTM build of Windows 10 mobile to build 10166

[Windows Central Question]

Hello helper,
I am owning a Lumia 435 and it has the current stable version of Windows 10 Mobile installed...the RTM one.... I just discovered about project Astoria, and about installing Android apps on Windows 10 mobile... But unfortunately it is disabled after build 10166. Therefore please assist me with restoring back to the build 10166....plz plz plz... I am a die hard windows fan..... Loving Windows... <3...

 

[xandros9]

Can't be done.

And also, you don't want to do that. You'll get a device that will likely not run what you need well or at all and a device that is inferior in stability and performance compared to the already mediocre production Windows 10 Mobile.

Buy an Android phone. And pick well, there's a lot of variability among them.