Update HTC One M8 to Android 4.4.4 CM11 M9 Custom ROM
Lollipop-based ROM for HTCOne (M8) GPe available on XDA
HTC ONE M8 (m8) - CyanogenMod Roms
Add Custom ROM Features to Your Stock Google Play Edition HTC One M8 « HTC One :: Gadget Hacks
Download Verizon HTC One M8 Android 5.0.1 update in .ZIP format, recovery flashable untouched ROM
How to Get S-Off on Your HTC One M8 to Install Custom Firmware & Mods « HTC One :: Gadget Hacks
How to Install a Custom ROM on Your HTC One for a Completely New Experience « HTC One :: Gadget Hacks
Team Android - #Android Update HTC One (M8) to Android 6.0.1 ViperOne Marshmallow Custom ROM http://www.teamandroid.com/2016/08/24/update-htc-one- m8-android-601-viperone-marshmallow-custom-rom/?utm_source=dlvr.it&utm_medium=facebook | Facebook