What is the FW for UT800 and RTL516?

Hi

what is the latest firmware for UT800 and RTL516

i am running 2.4 for UT800 and 3.33 for RTL516, have a hard time finding out if they are the latest

also do you know if they update automatically when connected through edge 1040 to a phone though Garmin connect. Trying to avoid having to get an ANT+ adapter


regards

rundelight