Remember, Below guide is to update full OTA firmware file on AT&T Galaxy S7.

Download Firmware Here

Download Full ROM OTA Update

Required Drivers and ODIN:


Guide to Flash Firmware Using ODIN

I hope you followed the above full guide link to install November Security Patch Nougat on AT&T Galaxy S7 manually. If any queries or feedback, please write a comment to us.

Source: AT&T