HTC M8 VWZ - Super CID and S-OFF - Now What I do?

Hi guys,

Im new to HTC phones. But bought a M8 VWZ with Super CID and S-OFF ready. Using it outside the US.

Can you tell me please, what I can do to update the phone as It is stuck on Android 4.4? Can I Install any Firmware? Needs to be some one specifically?

Please your help :fingers-crossed::fingers-crossed::fingers-crossed:

Download from this link