The latest European map for the NAC_EUR_WAVE4 system is 21.0.0-r0.
If you successfully did the firmware update but the map update failed, it's usually because you prepared the USB flash drive on a macOS system.
That system automatically writes files to the flash drive (such as ".DS_store") that messes with the installation procedure in the car. This isn't a problem with touchscreen/firmware updates, which only verify the SHA256 checksum for individual files, not full folders such as the "/SWL/002*/Data/data-pkg/NAV/MAP/" (see the final line of "/SWL/002*/HashList.ini") and fail if any new files are present. See viewtopic.php?p=854057#p854057
This should fix your USB flash drive:
Code: Select all
find /Volumes/*/SWL/002*/Data/data-pkg/NAV/MAP/ -type f ! -name "*.ttpkg" -delete