update confusion

adam

Inactive User
Joined
Mar 7, 2006
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hi all, i think i have 2 jtagable xboxes but i'm a bit confused about the updates. as i understand it i can currently run the jtag hack to retrieve the cpu/dvd key. i am hoping to have 1 box for the latest updates for the sky hack and the other for the full jtag. the bit i dont get is this. do i take the latest update for the latest functionaliy ie sky hack or does this prevent me from going back (without a chip change) or am i supposed to patch the update or somthing?
if i update do i lose all functonality such as un banning or have i missed something. essentially i would like (on one box)to have the latest updates without losing the ability to reprogram the nand
 
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