How Can i Uninstall My android Update?

[Android Central Question]

Now My Android Update is 7.1.1. in this i have lot of problems(40% mobile automatically swithoff, battery drained quickly) in my mobile.
But in my old android update like 6 or 7.0 there is no problem in it.
so need please give me one good solution.

 

[belodion]

The two problems you mention could simply indicate a bad battery. If there are other problems, tell us.
https://forums.androidcentral.com/showthread.php?t=409154

 

[Rukbat]

And you can't "uninstall" an update - an update replaces the code that's in the phone, so they'd have to write a "downdate" program to put that code back. About the best you can do is back everything up, then flash an older version, then restore everything. And if belodion is right and it is a battery problem, it won't change anything. (And it will eventually update again anyway. The only way to stop Android updates is to root the phone and disable the OTA app.)