AT&T One M9 Android 5.1 Lollipop update is now rolling out in United States.
Mo Versi, VP of product management at HTC has officially confirmed via Twitter that One M9 Android 5.1 Lollipop update is now approved by Google. The latest firmware is due release via Over the air [OTA] update starting from July 16, 2015.
Mo Versi officially tweeted -
HTC One (M9) AT&T Owners! We have received technical approval on Lollipop OS 5.1 which includes camera improvements. OTA to start on 7/15!!
— Mo Versi (@moversi) July 14, 2015
The AT&T branded HTC One M9 came up with Android 5.0 Lollipop out of box.