Forerunner 645 Non-Music APAC Beta software

The beta software 5.74 is here https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-645-645-m/167433/forerunner-645-beta-5-74-is-now-available

What I am interested in is whether this will work on APAC units which I have for no apparent good reason.