Garmin confirm that the XT should update via either Wifi or Express.
(Althoughm, currently, mine won't! Annoying. Get as far as the estimate time (4+ hours), allows a quick software update and then it hangs before eventually spitting out an error message. WiFi and Express. Unit is new, bought it a few months ago, only just opened the box. Maps appear to date from 2019/20 and there's 13gb or so to update - perhaps I need to add an SD card. Further investigation required...)
(Althoughm, currently, mine won't! Annoying. Get as far as the estimate time (4+ hours), allows a quick software update and then it hangs before eventually spitting out an error message. WiFi and Express. Unit is new, bought it a few months ago, only just opened the box. Maps appear to date from 2019/20 and there's 13gb or so to update - perhaps I need to add an SD card. Further investigation required...)
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