T-Mobile has released the official Android 6.0 Marshmallow for T-Mobile HTC One M9 with software version 3.39.531.7 and size about 1.32 GB. The release date for Marshmallow was confirmed as 16 Feb and now T-Mobile kept it’s promise and rolled out Stock Marshmallow firmware for HTC One M9. The Marshmallow update brought much improved features, including redesigned interface and security patches, so if you wish to update T-Mobile HTC One M9 on Android 6.0 Marshmallow 3.39.531.7 firmware then there are two possible ways to do that, the first one is the OTA (Over The Air) method and the other one is the manual installation using stock recovery, we have already posted a guide on Verizon HTC One M9.
To update your device via OTA just follow the below simple steps or sometimes you don’t even need to perform that because the update automatically knocks at your device.
How to install official Android 6.0 Marshmallow 3.39.531.7 on T-Mobile HTC One M9
To update T-Mobile HTC One M9 on Android 6.0 Marshmallow you don’t need to download multiple file for it, just you need your device and the working internet connection. You must also remember that OTA process works only on Stock devices which means your device is no longer rooted while you searching for latest firmware via OTA. If you think your device is rooted then don’t waste your time switch to alternative firmware update processes or if possible un-root it and then give it a try. But we don’t recommend you to get stuck in such a long un-rooting process just manually if the download link is available. If you think you are all set to go, then
Go to device Settings >> tap on About device >> Software updates.
Now tap it to check the latest available firmware. Upon it’s availability you will be prompted about the update, now what just tap “Download Now” to instantly download the firmware or “Download later” if you wish to download later. Some times it depends on the region too for example, if the update is released for a specific region but you are not present there it will take some delay until firmware update reaches that region
Manually install Android 6.0 Marshmallow on T-Mobile HTC One M9
To manually install Android 6.0 Marshmallow on T-Mobile HTC One M9, you need to download the Android 6.0 Marshmallow firmware from the below provided link and install it via Stock recovery as directed.
Download Android 6.0 Marshmallow 3.39.531.7 for T-Mobile HTC One M9 (Link removed temporarily)
Connect your device to PC and transfer the firmware file on device storage. If you have downloaded the firmware using your phone then skip this step.
Now turn off your device completely.
Boot into stock recovery mode using hardware keys combination or any other way you find easy.
Once in recovery mode, now select install zip from sdcard
Then select the firmware zip and choose yes to start the installation process.
That’s it! You have successfully updated your T-Mobile HTC One M9 to Android 6.0 Marshmallow official 3.39.531.7 firmware. If you have any query you are free to ask, please give us +1 or Like to say thanks.