Ok flashed the DPH3 update using kies. CF-Autroroot still works on it and I was able to get root on the device. One word of caution though the CF autoroot installs a custom recovery and once it finishes rooting the tablet installs back the stock recovery. The stock recovery that CF-autoroot installs is the DOK1 version instead of the newer DPH3 version. The tablet boots up fine though albeit it takes a few minutes and some reboots. Following this I also installed TWRP 3.0.2 and everything is happy so far