During one bad moment, someone named Me created a deny all ipfilter rule
and moved it to the top of the rule list (*.*.*.* / 32, reject).
"Surely there must be some way to reset all the networking bits from
the console?" says I.
Apparently not. All the service mode resets did nothing for wiping out
the ipfilter bits. Our local service guys came out too and gave up. They
couldn't even get it to, as they put it, load new software.
The mistake is mine, of course, but I'm still amazed I could brick it
so easily and so thoroughly.
Advice that isn't "Don't Do That" greatly appreciated.
Thank you for your time.
Imagine me pointing at you and calmly saying
"AH HA HA HA HA HA HA HA HA HA HA HA , AH HA HA HA HA HA HA HA HA HA HA HA!!!!!!"
You are not the first by far.
Go to Machine Status > Tools > Network Settings > Network Setup >TCP/IP Settings > Default All > Continue
Beyond that you would need to reload via USB, just drop the dlm file in a folder at the root named DWLD of the USB key and put it in the USB port and turn on the printer (This is the kill all method)