The latest versions of iXtreme are Xbox Live Safe. Yes, the latest Xbox Live Update (August 11, 2009 [8/11/2009]) is safe with the latest versions of iXtreme.
The latest iXtreme versions for each of the 360’s DVD drives are listed below:
Samsung: 1.6
Hitachi: 1.51
Benq: 1.6
Liteon: 1.6
The Address’s flashing program of choice: JungleFlasher
Current version of JungleFlasher: 1.66
Download from here
Click on your Xbox 360’s DVD Drive below to see the guide on how to flash it:

