How to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow

In this tutorial, we have mentioned the step by step process to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow in a matter of minutes, the same way as other Galaxy devices. All you need to do is just follow the steps carefully to avoid issues during the process.
Samsung rolled out stock Nougat update for T-Mobile S6 Edge Plus G928T just a few days back. Till now the device was running Android 6.0.1 Marshmallow firmware before it tasted the official nougat treat. Most of the users have already updated their device on latest firmware but there are still some of them who would like to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow or want to stay permanently on Marshmallow.
If you are one of those who is looking to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow then you are at the right place. Just go ahead and follow the process to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow.
How to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow
Before you begin:
Download Odin 3.12.3 from here.
Latest Samsung USB drivers must be installed on your device.
Enable USB Debugging. Settings > Developers options > USB Debugging
Process to downgrade T-Mobile S6 Edge Plus G928T from Nougat to Marshmallow
Boot your device into ‘Download Mode’ or follow this guide to see how to do it.
Once in ‘Download Mode’ then follow this guide to install Marshmallow firmware on T-Mobile Galaxy S6 Edge Plus.
Download stock Marshmallow firmware for T-Mobile S6 Edge Plus G928T: Here [G928TUVU4DQC2 firmware]
That’s it! You have successfully downgraded your T-Mobile S6 Edge Plus G928T to Android 6.0.1 Marshmallow from Android 7.0 Nougat.