how to replace a device without reconfiguring

Issue: when you remove a device and replace it you have to create a new config file. this takes time.

See:
http://ftcforum.usfirst.org/showthread.php?4360-Scanning-Order-for-Devices-in-Configuration-File

Note: I think the phones the kids had have a file browser editor on them that might let us edit the config file without moving to a PC first.
