Update AT&T HTC One A9 to Stock Marshmallow Firmware With Latest RUU
Following the global variant, here is the AT&T variant of HTC One A9 guide to restore your device to stock firmware with the latest RUU file. The latest software upgrade to version 1.27.502.5 for the AT&T variant brings battery and camera improvements along with the latest Marshmallow firmware with the latest Sense 7 UI. The One A9…