As launch date for the Polar Vantage V & M are closer, there will be new firmware updates
Unfortunately, not much information on what the update does.
Firmware update can be done wirelessly, although takes longer. I used an iPhone 5s and it took 20+minutes to complete updating the Polar Vantage V.
I updated the Polar Vantage M using my Mac with Polar Flow and it took less than 10 minutes.
We will be having our get together to do a group setup, when the Polar Vantage arrives on our shores, and if you wish to join us for this, get over to our shop and get yourself a Polar Vantage!