Flippin 'eck.. Read!
You have a DuoX2 Lite. This has 1 bank. Therefore you can have one BIOS on this chip. You say you want to go on Live. Therefore you must flash a RETAIL BIOS to this bank.
All is good, all is well, Live works, but you have not got a hacked Xbox any more as you only have a retail BIOS (this may be all that you want, if so - great).
If you care about a hacked BIOS, then you will need to get a new chip that enables you to have TWO BIOS' on the chip at the same time, with a switch to choose between.