Normally I would not care about matters like this.  But what motivated me to do this was related to an app that was very useful while my phone was at version 6.01 (Marshmallow) of Android which stopped working after I updated to version 7 (Nougat).  This app is called PdaNet + for Android by JuneFabrics.  It provided me a Wi-Fi hotspot without the cost of a hotspot subscription from the wireless cell phone service provider.

If you are in the same boat as me, where an app stopped working after updating to Android 7 (Nougat), then this article is for you.

This article will show you how to downgrade to Marshmallow and restore functionality you need on your phone.

To do this, you’ll need the following:

• official firmware file (Samsung Galaxy S7 Firmware) (my phone uses SM-G930V)
• Odin3.12.3
• Samsung USB driver <– make sure to have this installed first before you do anything else; it will be one less thing to worry about.  Or if you have the Smart Switch program, you can use that to install the underlying USB drivers as well.

This video from MrW0lf provides some visuals on how to do this; it assumes you’ve already installed the Samsung USB drivers or the Smart Switch program.