If the manufacturing date is August 2002 or later it *can* be an xbox v1.1 but that is NOT 100% sure, some 08/2002 & 09/2002 xbox consoles will still be v1.0
At this moment there's NO bios/kernel yet for xbox v1.1 ... but Team X-ecuter will release a v1.1 compatible bios soon.

If you don't know what xbox version you have (all prior 08/2002 are v1.0) :

*Goto the "settings" option in the XBOX menu and select "Sytem Info". You will see lots of legal text.
At the end of the txt you will see something like
K: 1.00.xxxx.01
D: 1.00.xxxx.01
If you don't see this you still have one of the first xbox versions (USA only) , so it's a v1.0
If the xxxx = 4034 or 4036 or 4627 you have a v1.0
If the xxxx = 4817 you have a v1.1

*Open the xbox ... if there's a FAN on the GPU (nvidia chip , next the intel cpu) you have a v1.0 , if no FAN you have a v1.1

 

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