Looking for root/ unroot ASUS Memo Pad 10.1 FHD ME302C on V5.0.22

Hi guys, I've looked through the forums and can't find an updated root method for the Asus Memo Pad 10.1 FHD ME302C for ver. 5.0.22. I would like to find a method where I can have full root access and also have a method to unroot and bring back to stock if need be. Any guidance would be great Thank you.