I used this guy's video for my m7. Here's the one he did for the m8. Just watch it first, make sure everything on xda says it will work for verizon as well. I don't know if it's GMA only. How to Convert HTC One M8 to Google Play Edition w/ OTA Updates:

Can you point me to that video? I'm running weaksauce 2 and was wondering if I can go that route with my Verizon M8.