I echo the thanks too! Always said driver updates for older equipment pays dividends with customers. Established users can sell older gear for new , and the folk buying second hand get a great experience and update eventually themselves.
After downsizing to a smaller interface I had a unexpected job which required more inputs. I pulled my old MR816 csx out of storage and hooked it up to a Mac laptop running ElCap. Had to use a lightning to FireWire adapter and an 800 -400 FireWire cable so I wasn’t expecting it actually work!
I installed the new divers fresh ( no previous install ) and under Cubase 8.03 everything worked great! I was recording classical instruments and I’d forgotten how detailed the preamps are on the MR. It’s a great interface!