How to not install windows 10 insider which I already downloaded?

[mukulagarwal]

Hello,
I have already downloaded windows 10 insider for lumia 720 but after reading reviews on terrable performance on 512 MB phone making phone unusable,i realised I don't want to install it.
How can i avoid installing it.?

 

[MP3Mike]

I'm not sure can. It is possible that a hard reset would prevent it. The only way I know for sure to not get it installed would be to use the WDRT to restore your phone with the factory WP8.1 image.

 

[Harrie-S]

A hard reset will also do it (as long as you did not install it. After install you need the WDRT.