It was rooted with Towelroot
I have Titanium Backup Pro, SuperSU and ESFileExplorer installed.
I have been trying to install TWRP using Odin. I tried installing both 220.127.116.11 and 18.104.22.168 d2vzw.tar but both failed.
I went looking in the Play Store for GooManager but it is not there.
Is there another relatively easy way to install TWRP or make a system backup to an external SDcard through USB.
Any help would be appreciated.