I know that this post is old as dirt (just like the MT radios) however, after needing to reprogram a VHF MT2000, I figured that I'd add my two cents and possibly assist others. The method that I used is an older Windows XP machine (that I also use for XTS3000s).
1. Grab a thumb drive that you are not going to use (a little 1gb drive will work).
2. Download Rufus portable at
Rufus - Create bootable USB drives the easy way Then run Rufus.
3. In Rufus, select FAT32, default cluster size, check "Quick Format", "Create a bootable disk using Free-DOS", "create extended label..." and click the "Start" button.
4. After Rufus is finished, open your thumb drive and copy all of the MTSX Lab files to the thumb drive. DO NOT delete the few files that are in there.
5. Restart the PC and Boot from the USB (you may have to play with your boot order.
If done correctly, you should be able to find yourself at a DOS prompt.
6. At the DOS prompt type "RUNTIME.exe"
[The "C" drive is technically the flash/thumb drive, hence why you will need to copy the MTSX Lab files to the thumb drive before rebooting.]
7. MTSX Lab should start up and you should be able to read/write to the old dinosaurs.
If someone stumbles across this and tries this method and has issues, let me know and I'll try to help you.