Hmmmm, It should not have asked to reboot the xep unless you changed xep settings, like IP address, email settings, etc.
There is a way to jumper the xep to force it to a static address. Check the manaul. You will then need to use a crossover cat5 wire to connect your computer directly to the xep. Then assign your computer a static address in the same subnet. Alternatively, you can change the subnet on your router.
It might not be a bad idea to use the crossover wire becuase it will take out the variables of your home network and be a direct shot. Again, be sure that your computer is not putting up any firewalls or antivirus stuff.
I don't thinkg there is a way to "factory default" the xep.