ok... you want to have a tsop on your xbox v1.6???... try this!!!
1 - install a cheap mod
2 - flash it whit the retail bios 1.6 and turn off your xbox.
...(at this point you have a custom tsop on your 1.6)
3 - turn on your xbox
4 - now do the 007 and flash whit a m8 bios!!!
congrats... you have flashed your custom tsop on your xbox v1.6
now you have two tsop on your box... one original and one custom...