Well… 
How I did that is roughly documented here. So it’s not a flash-in-ancient-times-and then-update
scenario, it’s all manual mangling.
Obviously, with the C2 that’s not possible otherwise.
I guess I could reverse it too if it really makes a difference, but like to be quite subborn in my abhorrence of the default user name.
Thanks for looking - I think so too, but something about it shows up in the logs so I wanted to be transparent about it.
Anyway, my C2 device is in the process of downloading something secret, so I won’t reboot ATM. But I’ll report back after that is done.