How do i get back to windows 8.1?

[YallaMurali]

My phone is Lumia 830..yesterday i am installed insider preview....and also upgrade to windows 10....but some of the apps are not worked.....so please help me to get back windows 8.1....How to do this....can any one suggest me....

 

[RumoredNow]

Use the first tool on this page: How can I recover/reset/restore my phone software? - Microsoft - USA Windows Phone Recovery Tool.

In future be sure to know how to revert BEFORE trying experimental software.

Good Luck.