Subscribe to my channel and also press this Bell icon so you never miss any new updates cause whenever we upload new video you will get a notification on you phone welcome to all about PC today we will learn how we can upgrade any Android version to 9.0 open settings and go to about phone as you can see my current Android version is 5.1 close this and open your phone's browser go to the link that is in the description click on download' root explorer we have downloaded the file now install this application allow root permission go to the root tab and find system folder long-press on build. prop click on three dots and open file in text editor edit ro. build. version. release=9.0. change this type 9.0 click on three dots and save and exit please restart your phone to take changes effect we have restarted our phone as you can see that our Android version has been upgraded to 9.0 thanks for watching subscribe our channel for latest updates.
Source : All About PC