Can't install any data at all even I did reset my watch.
I have the same issue with 20.29.
I followed this instructions - https://support.garmin.com/en-HK/?faq=GiLICKFtvE1nV5uq9diX89
But no hope.
I can fix this now , you have to Full Uninstall Of Garmin expresssupport.garmin.com/.../
