You are correct, yes -- tried copy/pasting as many guides suggest (and GMK) but that was failing as well.
Highly appreciate the link and yep, after all that struggling it just worked this morning o_O
I've struggled getting a copy of the 1.07 BIOS from their Google Drive -- is there anything that would prevent me from getting this working with the 1.06 BIOS which is currently installed (and would someone be as kind to provide a copy of 1.07?)