Not sure, i never had the original and got mine once the SR71 was already out. I know there was a (possibly free) upgrade option for original owners, but i think thats long passed.
If you bought it new, then its most likely the original. I cant speak to how itll function cause ive never used it. If you bought it used then it could possibly be upgraded and still have the old sleeve.
Ill let someone else answer it better. Im sure you can still get it upgraded, whatever that entails, but itll probably cost you some money now. Your best bet is to contact @
THC SCIENTIFIC