For those of you looking to update to the latest Android operating system on your HTC One M7, you need to take a look at the latest Lineage OS with Android 7.1.1 Nougat. Based on latest Android 7.1.1, Lineage OS brings you the latest features and lot of customisation.
Out of the box, you will get all of the latest Android Nougat features and more.
Read More for downloading Links:
Download Android 7.1 Gapps – Use ARM(These are Google Apps for eg playstore,google play services etc, They do not come with the Rom)
Please Follow the Instructions carefully and if you have any doubts ,watch the video carefully!