Connect the serial connection of the Assabet communications cable to your PC.
Using a serial communications tool, such as minicom, establish a serial connection to the assabet using the following settings:
Restart the assabet, and quickly press the Spacebar.
You should see a boot prompt in your communications tool.
If you need to upload a new kernel, enter 'load kernel' and use XModem to send ~/kernel/arch/arm/boot/zImage to the Assabet.
At the prompt, enter 'load ramdisk' and use XModem to send ramdisk.img.gz
Restart your Assabet.