Download the root file kernel For root the Galaxy J7 Prime2 SM-G611F
Model Number : SM-G611F
Android Version : Oreo (8.1)
Extract the kernel placed in this post after download and Flash the file in the pda section in the odin software.
This file is only for Galaxy J7 Prime2 SM-G611F model, dont use this file for other models .if use it can damaged your device