CyanogenMod 11 (Android KitKat 4.4.4) port to the HTC First (myst_ul/opera_ul).
Includes March 1st, 2016 Security fixes.
I just built this, porting work was done by CMyst (https://github.com/CMyst)
Additional Information:
Known problems:
* Needs S-OFF in order to open Security settings
* NFC probably doesn't work
* Camera crashes occasionally
As I no longer have a valid SIM card for this phone, haven't tested calling/SMS but appears as though it should work. Install at your own risk.