Hey Jeff,
After interrupting uboot the port was still dead.
Going forward I think I’m going to try and acquire this (http://www.multitech.net/developer/products/multiconnect-conduit-platform/accessory-cards/mtac-eth/) MTAC-ETH accessory card.
Failing that I might try either a USB Wifi module or a USB<->RJ45 adapter.
Thanks for your assistance Jeff,
bloody legend.
Hi Jeff,
The device has been power cycled.
The only modification I made was to install the a packet forwarder for TTN however the device had worked fine for a significant period of time.
It was a sudden, unexpected failure. Possible associated with a brown out or black out (unconfirmed).