There are two ways Google Nexus update:
- Using recovery (to update Google Nexus with official rom)
- Using Fastboot (to recover or update firmware Google Nexus)
If you want to update your phone using recovery – download official update, reboot your phone into recovery mode and click “Install update from SDcard”.
If your model is not listed, you can write a comment below. We will solve the problem and give you a link to update the firmware.