Step 7 – Press the Power button again and select “choose zip from sdcard”.
Step 8 – Now using your volume keys, navigate to the SR3-SuperSU-v2.79-SR3-20170114223742.zip file that you copied to your SD card and select it using the Power button. Confirm the installation on the next screen and the installation should start now.
Step 9 – After the installation completes, go to main recovery menu and flash the patched boot image no-verity-no-encrypt_ashyx.zip. Hint: It’s exactly the same as Step 8 but now with a different file.
Step 10 – That’s it! Reboot the tablet by selecting “reboot system now“. Your Samsung Galaxy Tab S3 will reboot now!
That’s it. Your Samsung Galaxy Tab S3 has now been rooted on Android 7.0 Nougat with SuperSU package. Check for the SuperSU app in your apps list to verify.
To make sure you have correctly installed the above root method and it’s working, verify with Root Checker as given in the link.
If you run into any problems, feel free to drop us a comment below and we will reply you back ASAP with the fix or the solution to your problem.