The only consumer device available which can run an Android TV until today, is the Nexus Player, that means that people who have one of those are true Android fans. It follows that they are main candidates for ROM flashing, so they’ll be glad to hear that now they can install CyanogenMod on their set-top box. CM 12.1, based on Android 5.1 is now available in nightly build for the Nexus Player.
A customized ROM for a set-top box makes less sense to a set-top box than a phone; Android TV is supposed to be alittle condensed media-focused experience, but can only expand via apps. Open up the bootloader on the Nexus Player and install a personalized recovery to flash CyanogenMod is bit complicated too. For now, there’s just one nightly build available for “fugu”, the hardware’s codename.
Just remember that nightly builds are offered as with no garantees, and with Android TV being a new technically platform for the ROM team, there ara a few teething troubles. If youi’r e ready to install it anyway, it’s already available on CM database to download. It could or couldn’t get a more stable “M” through the next cycle.