FrostyTheSnowman released a new revision of his 360 Modification USB Drive(info).

What?s new/fixed in v1.6: * Removed manual firmware dump check screen (due to keyboard incompatibility) * Added firmware dump validation scripting (to replace manual checks) * Added ?Advanced Options? menu * Added direct custom firmware flashing menu for Samsung/BenQ/Lite-On drives * Corrected USB Boot Drive Letter detection * USB Drive can now be created with either FreeDOS or MS-DOS (compatibility fix for older PCs)