Google Nexus 5X owners have waited patiently for Android 7.1 Nougat to come their way but now the wait is over, at least unofficially. The device has been given Android 7.1 Nougat via the backdoor by way of a custom ROM from Cyanogen.
The developer has offered the Google Nexus 5X the update to Android 7.1 Nougat with CM14.1 and this is a nightly build of the ROM. Due to this there could be some issues and features that don’t work as they should do.
Before you rush into installing CM14.1 Android 7.1 Nougat you do need to have 80% battery life left and you will also need to root the handset. USB debugging should be enabled and you are going to need TWRP or CWM installed on the device.
You should download CM14.1 along with GApps onto your device and then you need to connect the handset to the computer and copy over the files onto the SDCard. Turn off the handset and disconnect the USB lead from the computer.
Start up the phone and go into recovery and this is done by holding down the power button, volume down and volume up. Once you let go of the buttons you are going to see Fastboot or Bootloader and you have to use the volume keys to navigate along with the power button for choosing. In this case you should choose Bootloader and the recovery.
Ensure that you make a backup and then restore and do a Nandroid backup. Head back to the main menu and choose wipe data and wipe data/factory reset and wipe the cache partition and delvik cache wipe.
Install the zip from your SDcard and then go ahead and install CM14.1 Android 7.1 Nougat. You can also do the same with the GApps you downloaded. You can then reboot the Nexus 5X and you will now have Android 7.1 Nougat installed.