Hi Matthew. I had similar things and ended up using a boot.screen on the SD card to customize each.

On 14 Dec 2010 07:41, "Matthew Clark" <linux.matthew@gmail.com> wrote:
> I have a Stagecoach with 5 Overo devices inserted. They all seem to
> boot from nand/mmc just fine (I can ssh into each one) but I want to
> change some of the u-boot parameters on each Overo. I've only done it
> previously through the console serial on my Tobi, plugging into the
> Stagecoach's USB console jack only shows me the console of the Overo in
> the first slot closest to the Ethernet jack. I could drop each Overo
> into the first slot, but that gets into the silliness of having udev
> decide to start shuffling around my ethernet device assignements. How
> can I view the console windows of the Overo devices in the other slots?
>
> Matt
>
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