There is one way for OnePlus update:
If you want to update your phone using recovery – download official update, reboot your phone into recovery mode and click “Install update from SDcard”.
OS Android is the most popular operating system in the world. It’s all because the most of smartphones, tablets and other gadgets are running by Android OS. The resource play.google.com is a storage for millions of applications and games to suit all tastes. However, these applications and games usually adapted for a particular version of OS (mainly new). That why It’s becoming necessary to know how to update Android firmware.
First to understand how to update Android version, you need to:
Update your smartphone or tablet with the system automatically update tool:
If your device does not support automatic updating, you need to install an alternative firmware (ROM).
System update individually for each Android smartphone or tablet. Therefore, there is no universal software or software for updating Android.
You can update Android using the system update tool, download the update for your device in the list below and save it to your SD card or internal memory.