Lineage Team (Cyanogen) has finally rolled out the Official Build of LineageOS 14.1 for the Axon 7 which is based on the latest Android 7.1.1 Nougat Firmware. Now you can feel and test the CAF LineageOS 14.1 packed with Nougat on your Axon 7 which have a lot of eye-catching features, improvement and powerful battery optimisation. Also, this ROM is quite lighter than the Stock one and runs much faster and better than before. Currently, this ROM is in Nightly Stage, and you will receive the Stable Snapshot soon.

Update Your Phone using this Tutorial: http://www.droidphoria.com/2017/03/Axon-7-Lineage-OS-Nougat-Android-7.1.1.html