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 Resurrection Remix ROM with Android 6.0.1 Marshmallow. Based on latest Android 6.0.1, Resurrection Remix ROM brings you the latest CM13 and lot of customizations.
Out of the box, you will get all of the latest Android Marshmallow features along with CM13 features like AudioFX, CM themes (compatible with all CM13 themes), and more.
Download Android 6.0 Gapps (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!