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The One M9 flagship, which is almost one year old, came preinstalled with Android 5.0 Lollipop and a few months later, it was upgraded to 5.1 Lollipop. Its predecessor has received the Android 6.0 Marshmallow before it and now, T-Mobile is preparing to roll out the firmware to its One M9.

If you’re a HTC One M9 owner and your device is connected to T-Mobile, then you’ve probably lost your patience by now and you were almost convinced that the Android 6.0 Marshmallow will not be available very soon. Well, this will finally happen, but T-Mobile won’t offer you this gift before Valentine’s Day, which is quite disappointing. Instead, the Android 6.0 Marshmallow update will start rolling out this Tuesday and we have the confirmation from Mo Versi, product manager at HTC, who posted yesterday on Twitter this big announcement: “Happy Friday! Good news for T-Mobile HTC One (M9) owners! We’ve received technical approval on Marshmallow, with the OTA to start on 2/16.”

The Verizon customers are scheduled to receive this update on the same day, but the software will be pushed out in phases, so the users shouldn’t panic if they won’t be notified exactly on February 16. Sprint was faster in delivering this update, but the first users who started receiving Marshmallow at the end of December were those who bought the unlocked version of this flagship.

The One M9 was released in March 2015 and on the outside, it wasn’t very different from its predecessor, as it had the same metallic body with two slim horizontal lines on the back, at the top and at the bottom. The device is 0.2mm thicker (9.6mm) because HTC has increased the battery capacity to 2840mAh from 2600mAh, but the screen size and resolution remained the same: 5inch, supporting 1080 x 1920 pixels at 441 ppi. The new processor is an octa core clocked at 2GHz, based on a Qualcomm MSM8994 Snapdragon 810 chipset, and it’s backed by an Adreno 430 GPU and 3GB. The primary camera has a resolution of 20MP and an aperture of f/2.2, while the front camera is the 4MP Ultra pixel shooter that has been moved from the back of the One M8.