Yeah your chips fried mail it to me ;-)........but incase it isn't, why don't you try this.
There's a little black switch on the chip, flip it. This will put your chip into recovery mode. Go to the teamxodus website and download the latest iso version of the xenium OS. Burn it to a medium your xbox can read (aka CD-R, CD-RW, DVD-R etc.) and boot up ur xbox. You should get the recovery screen and it should say "Got from CD" wait for it to turn itself off, then switch the switch back and reboot it.