To update the Google Nexus 7 2013 you need to install an alternate firmware (ROM). If the device does not automatically update by itselves. You can use the new firmware for your smartphone.
You have to choose the firmware version and follow the instructions. If you have a trouble in update you can write about it in the comments below, we’ll help you.
There are two ways Google Nexus 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”.