Google Nexus 9 (codename: flounder) was launched in the year October 2014. The smartphone came out of the box with Android 5.0 Lollipop and later upgraded to Android 7.1.1 Nougat. Recently this device has received the official TWRP recovery support. So, on this page, we will guide you to install the TWRP Recovery on Nexus 9. This guide contains both the written instruction and video tutorial to help you install it quickly. Make sure to download the files required and then jump straight into instruction on how to install TWRP Recovery and Root your Nexus 9.
Keep in mind that before heading over to the process, you will need to unlock the device bootloader at first. As the smartphone OEMs provide a locked bootloader to its devices due to some security concerns, in order to install any third-party file, you will need to unlock the bootloader. Then you will be capable to install TWRP Custom Recovery on your Nexus 9 device and root as well. The TWRP Recovery can also take Nandroid backups, restore, wipe out system/data/cache, and more.
TWRP Recovery and its Advantages
Team Win Recovery Project is an open-source software custom recovery image for Android-based devices. It provides a touchscreen-enabled interface that allows users to install third-party firmware and back up the current system which is functions often unsupported by stock recovery images. – WikiPedia
