>
> Any help you could offer me would be greatly
> appreciated.
>
You could build your own serial console cable using any Linux embedded system. Sometimes ago, I saw this article to turn a LaFonera FON2100 serial port into a serial console port. I happened to have a spare of LaFonera FON2100 device flashed with an openwrt firmware. Then, I installed a minicom package and turned its serial port into a serial console port. Now, I just use my FON2100 device to troubleshoot any device by connecting both serial ports with a CD cable (taking into consideration of swapping the TX/RX ports and removing the VCC line). If you have some other working Pogo device, I am sure you can use it to troubleshoot the other two that are currently bricked.
> Any help you could offer me would be greatly
> appreciated.
>
You could build your own serial console cable using any Linux embedded system. Sometimes ago, I saw this article to turn a LaFonera FON2100 serial port into a serial console port. I happened to have a spare of LaFonera FON2100 device flashed with an openwrt firmware. Then, I installed a minicom package and turned its serial port into a serial console port. Now, I just use my FON2100 device to troubleshoot any device by connecting both serial ports with a CD cable (taking into consideration of swapping the TX/RX ports and removing the VCC line). If you have some other working Pogo device, I am sure you can use it to troubleshoot the other two that are currently bricked.