Posted by user8446 on May 18, 2016; 9:08pm
URL: https://itus.accessinnov.com/Guide-How-to-fix-resurrect-a-bricked-Shield-and-updated-to-1-51SP1-w-Feb-March-2016-hotfixes-fw-upgr-tp931p936.html

You'll only need the console cable if you have a corrupted bootloader. All of the other updates you can do in Linux. However, for $10 I would recommend getting one for troubleshooting and diagnostic.