On Saturday 19 July 2008, Oren Beck wrote:
2 or so meetings back there was some demonstration of flashing the FON devices thru the on board serial port. The operation as I seem to understand it has some complexities.
Actually, now it's generally just a matter of telnetting to a specific port within 2 seconds of power-on. Before that, it was pointing your DNS to a special server. Before that, another software hack. No need to open the thing up if you really don't want to.