Xbox Bios
 

The bios this refers to is for a homebrew Modchip, using the topflash method. Cant be used in any other way unless you have an existing mod chip.

u know what these bioses do ?

all they do is let u put bigger hd in with the home brew modchip thats all wast of time as 8 gig is alot to store ya xbox save games i got 169 save games on it and still got s**t load of space