Hello all, I'm new on here but this thread has been very interesting to me although there is less activity lately. I'm curious to see if anyone has any information on the new protocol that sirius is using. I have figured out most of the formatting for my basic needs but not the checksum part and it seems completely different from the documentation relating to v1.0.7. I see mention from "JosephCenxudong" that the svx200 may have been using this protocol as well I am using a svx300 personally and can confirm it is new. I've looked on Barry Gordans' download section and it appears that unless I missed it all of the documentation was for the version 1 protocol. Has anyone else had any luck getting the documentation or figuring out the checksum on the new protocol?