Iam very happy using this phone . Just bought HTC M8 International variant through OLX. When I came home and factory reset the phone, there was a app in it called KingoRoot. I downloaded Root Checker app from the play store. It showed the phone's status as rooted. I uninstalled the app and then it showed not rooted. Now the problem is that my phone is currently running Android 4.4.4 and I am aware that there is an Android 6.0 for the HTC M8, but when I check for software update in the settings, it says that the phone is up to date. It is not bringing up any OTA official update. Please help! What should I do? Any manual way of updating? Need Help. SOS.SOS.