pay attention, the usb stick is NTFS formatted ?
have you touch the files ?
no other files in root only this 2
have the same problem on my 2017 Stelvio.
I did everything as described here, but I always get the message that "USB not containing map update file"
The only difference I noted is that when dowloading the license from mopar site it is in the format: Europe-1019.meta.dct instead of europe.1019.meta.dct
Should I try to rename it eventually?