It was merely a couple of weeks ago that Mo Versi announced on Twitter that some Marshmallow goodies were on track for December release on HTC's latest flagships, the One A9 and One M9. Now according to him, the updates are ready to roll out on both devices, just in time for Christmas. I think HTC likes the idea of being the Santa of OTA updates.

HTC's latest almost-stock unlocked One A9 is getting Marshmallow 6.0.1, with all the emojis and plenty of bug fixes. This is all a testimony to HTC's eagerness to push software updates as quickly as possible when the AOSP source code lands. The One M9, 2015's flagship, is finally getting Marshmallow 6.0. Given that the older One M8 started receiving Marshmallow at the beginning of the month, M9 owners were getting a little antsy and anxious.

If you don't see the update right now, it's probably because Mo said it might be 24 hours for them to roll. But you should still start checking for updates because some users have already gotten them on their phones.

Here's the full 2.14GB RUU for the One M9 6.0 update v3.35.617.12: RUU HIMA UL M60 SENSE70 ATT MR NA Gen Unlock 3.35.617.12.exe. Do note that unlike OTAs, a RUU will likely wipe your data.

This software upgrade available for your HTC One provides the following key enhancements:

· System update to Android 6.0 Marshmallow

o App permissions: lets you define what you want to share and turn permission off any time.

o Now on Tap: gives you access to additional information whilst on your active screen.

o Smarter power management: Doze, a battery optimization feature.

o Android Security update: improving device on board security.

Details

Important note: This software upgrade comes in the form of two sequential updates. The first update will install software version 2.11.617.180 , which does not include the Android OS upgrades. The following update will install software version 3.35.617.12 , which includes the changes to the Android OS.

WARNING: During the upgrade process the device will reboot multiple times and show software upgrade screens. Do not remove the AC charger or long-press the Power button as this might stop the update and your device may be rendered inoperable!