That's odd; it should show up as a firmware version in CastleLink. If you look in the right-most tab (or second from right, I can't remember exactly) then it should give you a list of available firmwares. What does it show?
As for the Castle CM36 motorsnot being legal...there's a whole big story about that. Castle didn't get to have much of a say in the rules for ROAR, and the BRCA took on similar tight ruling for some reason. Anyway, Castle have been talking about making changes to their CM36 motors to possibly make them legal...or at least, change the design (AFAIK, to update them to a slotted design) and try to make sure they have a good say next time the rules are revised. Don't quote me on any of that though lol.
The sensorless Losi motors will run just fine of course, and their sensored motors *should* be ok...but it'd be worth asking around to see if anyone's tried that combination. Like I say, the Mamba doesn't get along with the odd few sensored motors for some reason.
Edit: Simon, sounds like your download corrupted. Same thing happened to me. Re-download it, and it should be fine.
