How can I fix a hang problem on my Lenovo in A6000?

[AC Question]

hang problem in lenovo in A6000

Previously I was using Android 4.4.4 Kit kat OS, recently I have install lollipop but I facing few problem with my handset Lenovo A6000 ,
Please let me know how to uninstall lollipop from my Lenovo a6000
Its very slow & hanging problem ...please help.

 

[B. Diddy]

Re: hang problem in lenovo in A6000

Welcome to Android Central! Was it an official over-the-air system update, or did you download the update and manually install it?

Downgrading Android versions usually requires rooting the phone, finding the previous stock ROM somewhere online, and installing it.