ordered the adapter right here from friendlyarm.com https://www.friendlyarm.com/index.php?route=product/product&product_id=208 turned out to be less useful than hoped. my desktop ubuntu did not recognize it (x86?) but my beaglebone black did. don't know if using the BBB will be of any value in t...
no longer necessary, and probably a bad idea.
dec 2019 flasher image works almost as documented making this problem moot.