And does yours now have a chip of some sort?

Yeah, not sure exactly what chip but I'll probably open it up at some point to inspect the guys handy work anyway.

Think it's one of these : http://www.consolewizard.co.uk/kes/original-phat-xbox-360-jtag-rgh-flashing/53-xbox-360-phat-rgh-reset-glitch-hack.html