Nexus 7 (2013) free install Android 7.0 Nougat Custom
If you own a Google Nexus 7 (2013) and you are looking to upgrade your OS to Android 7.0 Nougat, you came to the right place. To keep in mind is that this is not the official Android way of doing this update, but the AICP way. The latest AICP version is based on Android 7.0 Nougat and it brings with it all the CyanogedMod 14 features, and all the Nougat OS standard features as well.
Preparation before updating the device
Before installing your Android 7 AICP custom firmware you will firstly need to download and install USB drivers for Nexus 7 (2013) on your PC. The USB debugging option needs to be enabled, to do this you will need to access Menu>Settings>Applications, and from there on tap on Developer Options and check if the option is enabled. The intended Nexus device is required to be rooted. TWRP recovery should also be installed and before the installation process begins make sure the device has more than 70% of battery life.
First you will need to download the AICP Nougat Rom and the GApps package (OpenGApps ARM 7.0 Micro). After downloading the files, connect the intended Nexus device to your PC using the USB port and copy the ACIP Nougat Rom files from the SD card to the PC’s hard drive.
The next step is to disconnect the tablet and turn it off. Now the user has to boot the tablet into Bootloader mode by pressing and holding the Volume Up, Volume Down and the Power buttons at the same time. Then use the Volume keys to select the Bootloader mode and the Power button to access it.
Wipe data/factory reset and also wipe the cache partition and dalvik cache as well. After doing all of that you will need to select install, choose the zip location from the sdcard and confirm the AICP Android 7.0 installation.
After the Rom gets installed, repeat the previously steps and install the GApp package, and reboot the system. After the boot is finished the process should be completed.