Fenix 7 firmware

Hi,

my fenix 7 has firmware version 5.35.
I'm quite certain I read in other places that people upgraded to version 7.20 ... however, I cannot find a way to upgrade, garmin express insists that v5.35 is the latest and greatest.
Connect app the watch itself aren't helping either. 

Does anyone here have a suggestions that might help?

- Steven