(RUU Download) HTC released 2.8.617.4 Android 5.1 RUU firmware file for One M9 Developer Edition
As a HTC One M9 Developer Edition user, you should know, HTC started 2.8.617.4 Android 5.1 Lollipop update via OTA early last week:
Now, there is a better updating way for your flash.
HTC has released full RUU firmware file for 2.8.617.4 Android 5.1 Lollipop update. To HTC users, what a great way to start the update!
Well, grab the file.
RUUs Download Directly
With 2.8.617.4 update, your phone will be got a lot of important improvements, like data performance, call drop, battery life, temperature management, and more.
So, if you have a HTC One M9 Developer Edition, and you can now simply update your phone to the latest Android 5.1 Lollipop firmware version by flashing RUU file.