TTBOMK no separate patch was issued for MM3, because it was released in 1991, long before the internet became as all-pervasive as it is now. But the original game code was later amended to eliminate at least some of the bugs. I don't know when this replaced the v1.0, but that is the game that appears in the compilations like the "MM Classics" bundled with MM6 in the Might & Magic VI Limited Edition. That is the one I now play.

I still have the original game on one of my old drives, but I don't play it nowadays, and I don't have the original floppies any more, although I may have my backups squirreled away somewhere. Whether they'd still be readable is another matter, and these days, most people would probably have to buy a plug-in 3.5" floppy drive to even try!