i have an xboxwith an aladdin xt (unsure of version but not 1.6 or 1.6b) i think the chip has died.my friend wanted a new chip putting in so i got a new one . then he changed his mind and wanted it reverting to stock. how would i go about doing this???when the chip is removed it still says i need support( error 05 )how do i lock the hard disk easily???

Put the chip back in and lock the drive then take the chip back out