Hi all! I'm new to this forum. First of all many thanks for sharing this and all your help.
I'm also having and issue with 2021-01 map update. I had no issue updating to 2020-02 with 32GB USB2.0 drive. Now, doesn't seem to like my new 64GB USB3.1 drive. Downloaded files from MEGA link posted above. I may try it again with the 2.0 drive (i hope to find it)