I got a friend that is succesfully using the MK2 version.
Yes, try the speedo with the 40Mhz module on your 3VC and see what happen (try also both PCM and PPM modes if you got both PCM and PPM receivers).
Unfortunately the USB bridge will work only with the "Version 2" of the sxx series, my friend got the USB bridge and did not work on my sxx stock spec; so the only way to install the MK3 software is to send the ESC back to LRP.
I think that from Europe, Gemany is more comfortable than US, however US customer are more lucky than us
..... take a look at this link
http://www.teamassociated.com/news/a...change_Program_ .
If the speedo still not works also with the 40Mhz module, you can ask the right service procedure on the LRP forum here :
http://www.lrp.cc/forum/
Bye
Ema