There is no reason to force software updates when installing new units. If they need the software it will prompt you after being on for 15 minutes with a satellite connection.
FYI if the start up screen has red in it then you already have the new UI. The old UI was solid blue the whole way through it.
FYI if the start up screen has red in it then you already have the new UI. The old UI was solid blue the whole way through it.