My idiot buddy says he put the freestyle dash install thumb drive in and clicked it then clicked update it said it was downloading then it said it needed to restart to update new settings and it restarted to a black screen all 4 lights on the controller are on and the power light blinks.. it wont restart into xell with the eject button it wont restart into nxe with the rb pushed... nothing works at all?

what is left to do to this POS xenon just re-flashing the nand and hoping for the best?

No need to reflash the nand, just remove your hard drive or usb key that FSD is stored on. The 360 should then boot normally. Reinstall FSD then Relaunch dashlaunch and remake your ini file.