advocateamitbedi , Oct 6, 2016 : I was using sultanxda cm13 with twrp. Now, I restored my previous oos 2.2.1 backup. It was restored. All well. Then I got ota update notification. I downloaded that, but when I tried to install it said phone rooted it may not install properly. Exactly that happened. The install failed. I tried by downloading latest full rom 3.1.3 also, it also failed. Now I am on oos 2.2.1. The recovery shown is still twrp 18.104.22.168. In case it's due to old version of twrp then old help me how to update to latest twrp. Now Pls let me know how to go further so that I can install latest ota from oneplus.