Giant Trance E+3 how to tell FW version?

[Atebit]

I tried connecting to the bike using my iPhone RideControl app, but it says that I need to upgrade the FW before it will connect. I don’t want to upgrade the FW, I just want to know the version.

I have the RideControl Dash handlebar unit, is there any magic button combination that will let me access the FW version on that display?