How to Update and Root Nexus 9 LTE on Android 7.0 Nougat

Google officially released Android 7.0 Nougat on August 22. While available for several other Nexus devices, the company had promised that Nexus 6 and Nexus 9 LTE will receive the latest OS in the coming weeks. Following the release of Android 7.0 for Nexus 6 earlier this week, now we are also seeing the update being sent out to Nexus 9 LTE. You can now update your HTC Nexus 9 LTE to Android 7.0 Nougat over-the-air.

In any case, it’s the latest update available for your Nexus 9 LTE and Google would probably send October’s security patch with another OTA update. Follow this guide to update Nexus 9 LTE to Android 7.0 Nougat.

Prerequisites

Create a backup of all important data on your Nexus 9 device. Creating a Nandroid backup of your device is highly recommended.
Download and install USB drivers for Nexus 9 in your computer.
Enable USB debugging option by pressing Menu > Settings > Applications. Navigate and tap on Developer Options to ensure that USB Debugging is enabled.
Make sure that Android SDK is installed on your system and you have experience working downloading and installing files with it.
Ensure that your Nexus 9 carries more than 70% of charge.

How to update Nexus 9 LTE to Android 7.0 Nougat NRD90R

Required files: download Android 7.0 for Nexus 9 (LTE). Once downloaded, follow these steps to flash NRD90R Android 7.0 Nougat on Nexus 9 LTE.

Connect your Nexus 9 using a USB cable and turn it off.
Now, start the device in Fastboot mode (assuming that you have Fastboot and ADB already set up and ready to use): turn off your device. Then, press and hold Volume Up, Power and Home buttons until you see the Fastboot mode. You will see a START option at the top of the screen.
Go to the downloaded folder volantis-NRD90R and copy / paste all the files to your Fastboot directory. Your Fastboot directory should be the platform-tools folder in the Android SDK directory.
Unlock the bootloader:
- fastboot oem unlock – confirm.
From the factory images files in your Fastboot directory (platform-tools folder), also run the following command depending on your operating system:
- Windows: Run flash-all.bat
- Mac: Run flash-all.sh using Terminal
- Linux: Run flash-all.sh
Once the script finishes running, your Nexus 9 will reboot.