It was only a few weeks ago that the Android Marshmallow software update was released to HTC’s latest flagship handsets, the HTC One M9 and the One A9. The update which have already began rolling out a few days before the start of 2016 is via over-the-air.HTC’s new nearly stocked HTC One A9 unlocked version is receiving the Marshmallow Android 6.0.1 OS with a ton of bug fixes and a variety of new emojis added. This is shows HTC’s commitment to roll out new software updates as fast as possible after the AOSP source code launches. HTC’s 2015 flagship the One M9 is finally being updated to Android 6.0 Marshmallow.Here is the latest RUU One M9 Android 6.0 Marshmallow update weighing 2.14 GB:  RUU HIMA UL M60 SENSE70 ATT MR NA Gen Unlock 3.35.617.12.exe. However, compared to OTAs, a RUU is likely to delete all the data on your device.This updated operating system will bring the following improvements to the HTC One devices: better App permissions that give you the freedom to allow or disallow certain application permissions, Doze mode, which optimizes your device’s battery life, Android security patches, Google Now on Tap and a lot more.This Marshmallow upgrade will come in two update sequences. The initial update will have you install a 2.11.617.180 version software, which does not feature the Android OS enhancements. The follow up update will see the Android OS changes.NOTE: During the installation process, the handset may reboot a number of times while displaying the software update screen. Users should avoiding removing the device from the charger or holding down the Power key as this might affect the whole update process and even cause damage to your device.

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What's my model number?

There are several ways to locate your model number:

Option 1
On your device, go to Settings, then "About device" and scroll down to "Model number"
Option 2
Often times you can view the model number inside the device, by removing the battery
Option 3
Using Samsung's model/serial number location tool

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