Go to your MZD Connect system...
Go to Home Screen.
Settings,
System,
scroll down to About
Version Info
Gracenote should be version 8; if you have navigation, Mazda released a new maps update on Feb 1, 2018
the tach in the HUD has been gone ever since the first few updates to the CMU, the only way to have kept it was to have paired it with the memory seat control; Mazda said it was too distracting to the driver
this is the October 2017 update correct?
Edit: I downloaded the latest file from Mazda, put it on a flash drive, but my car is saying that there was no update to be found. Weird?