I have noted that there are some routers that have in addition
to the usual internal uart that can be connected with a
TTL converter, they also have an external usb connection.

A usb connection is just a special serial connection at
a special voltage.

Why could not the failsafe mode of these routers use the
externally connected usb port for its serial console.

Then it would be possible to unbrick these routers, when the
net connnection does not work, without ever opening the router
to connect to the uart. Instead a data cable between the
external usb connection and the fixing computer could be used.

What would be required to implement this idea? Could it be done
with a tailored version of openwrt? Or would in be needed to
hack u-boot?

Thank You for thinking about this question.




-- 
Paul Elliott                               1(512)837-1096
[email protected]               PMB 181, 11900 Metric Blvd Suite J
http://www.free.blackpatchpanel.com/pme/   Austin TX 78758-3117

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