Oneplus One Flash Oxygenos Cyanogen Os 12S Cm 12 1
If you’re in India, you’re not even sure if you’re going to get Cyanogen OS 12S OTA update. The rollout is slow and users get frustrated when checking for updates returns nothing. And OxygenOS might be the biggest blunder of it all. To install the official Lollipop upgrade from OnePlus, you need to unlock the Bootloader, manually flash a custom recovery and then flash a zip file. You might as well just root the phone while you’re at it....