Pogoplug V4 lost power, boots but will not get IP address for SSH (1 reply)

I have a Pogoplug V4 I have been using as a NAS, and recently had a power surge. It is booting from an SD card, and displays a green light once the power cycles, but does not show up on the network, and will not accept SSH connections at the IP address I had for it. I created a new rootfs for it on a new SD card, but it will not boot that image, only the SD card I originally made when I installed Debian.

I'm tempted to trash it and move to a PI, but I like the V4's USB 3.0 ports. Any suggestions where I go from here?