How can I unbrick my SM-P600 Note 10.1 2014 ed.

My Note 10.1 2014 Edition is stuck on the tablet title screen, not sure if its in reboot mode it returns to this screen if I try to shut it off... basically Its frozen, and when I try to shut it off it goes away a few seconds and comes back. This happened after I rooted with KingRoot, and tried to Flash a ROM, Im a complete Noob and should have done my homework... but I didnt. I see everyone suggesting odin and going into download mode... I can get to download mode but I am using a macbook pro, and there are very little options to use odin, I tried Jodin3... and Heimdall... no luck...

PLEASE HELP !