As state by
The hack is a modified firmware of the (original) Xbox Samsung SDG-605B/616T/616F DVD-ROM drive.
As you (should) know, all Xbox executables (XBE files) are signed by Microsoft (with a private key only MS has). This means that if you try to change anything to the XBE file, the signature will be wrong and the file will not boot.
You will need to combine this hack with
  • KeyDrive Xtractor/Patcher: tool that will allow you to easily extract and write the unique DVD key to/from an Xbox 360 DVD firmware file (so no need to hex-edit it manually anymore)...
You will then be able to copy genuine game DVD and fake the system with using self burned DVD. Great but not as great as seing Linux booting on it ;-)

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