2021 Garmin map is now available.
While I can't help with your problem, if you've already got the 2021.0 maps installed those are the latest. Honda only releases updates once a year (even though Garmin provides monthly updates on their own products), usually in the fall (Oct/Nov). It might not work because Garmin hasn't updated their software to recognize that XML file since there have not been any updates yet introduced for MY21 vehicles. Now if you've got 2020.0 or older then definitely call Garmin.I'm not having much luck updating my map for the first time in my new '21. I'm on a Mac which may be complicated things. I've got a 16GB USB stick, formatted it to FAT32 using Disk Utility. Took it to the truck and it created the XML file on the drive. Put it back in my Mac and Garmin Express is not finding it. My computer sees it, but not Garmin Express. I've even tried putting the drive in a powered USB hub. Garmin just says "We couldn't find a device or ANT stick." I've had it search at least a dozen times. Any ideas?