[Samsung Galaxy S7 Active Guides, News, & Discussio] tpierce89:
This is the entire process needed to remove FRP protection from your AT&T Samsung Galaxy S7 Active (G891A). Tested and working on Android 7.0 (2/26/18)​

Summary​

This process involves using a modified version of Odin to flash an unlocked bootloader. With the unlocked bootloader you can gain adb permissions and use adb commands to wipe the files that store the FRP credentials. After wiping the credentials, you will flash your device back to the original stock 7.0 firmware. This does not root your device. This does not trip knox.

Process​

The Download is 2GB. It will take a few minutes to download. This is necessary because it contains all the original firmware to return your phone to stock.

Download

: S7 FRP Bypass Kit​

Step 1

: Download the files and open the modified Odin.exe

Step 2

: Hold the Power, Home, and Volume Down buttons until your phone shows a green screen. Then release those buttons and press the volume up button to place your device in download mode. Once your phone is in download mode, connect it via usb to your computer running Odin. The COM port box in Odin should turn blue indicating a successful connection.

Step 3

: In Odin click the AP button and open the file AP_G891A_7.0_eng_boot.tar. Ensure that the checkbox beside the AP button is checked and then click start. Give the program a few minutes to execute. Your phone will reboot when flashing is complete.

Step 4

: Once your phone is rebooted, you should now be able to connect to it via ADB. I have created a simple .bat file to automatically do this for you. With your phone running, double click on Step4.bat and allow it to run for a minute or so. Pay attention to the window and ensure that it is making a connection. If the window continues to show "No Devices Found" then you need to repeat steps 2 and 3. If you were successful in running the .bat program then reboot your phone like normal and now you should be able to enter a new email account on the setup screen as if the phone is new. ***DO NOT STOP HERE***

Step 5

: Hold the Power, Home, and Volume Down buttons until your phone shows a green screen. Then release those buttons and press the volume up button one to place your device in download mode. Once you are in download mode again, connect your device to the computer if you unplugged it previously. Ensure that Odin detects your device.

Step 6

: Now you need to reflash the stock 7.0 firmware. With Odin open and your phone connected, click the BL button in Odin and navigate to the S7 Active Stock Firmware folder in the package you downloaded. In this folder are the stock files that correspond to the buttons in Odin. Put the BL, AP, CP, and CSC files in their respective places and click start. Don't be alarmed if Odin stops responding for a minute or two while loading the files. The AP file is rather large.

Once this finishes and your phone reboots you will have a stock FRP unlocked S7 Active just like it was brand new.

Disclaimer

: Do this at your own risk. I broke down the instructions as basic as I could, but you should have general Rom flashing knowledge / experience prior to doing this.