iXtreme 1.6 Firmware Released *Update*
Team Hyper X released version 1.6 of the iXtreme Firmware. The firmware is currently available for the Samsung, BenQ and LiteOn Xbox 360 DVD drives. After the release, there were reports of compatibility problems with some LiteOn drives and games that use the new Wave 3 video partition. A LiteOn repack / bugfix has since been released to correct this issue, anyone who downloaded the original LiteOn iXtreme 1.6 firmware file *should not* flash it and should get the repacked version instead. The Hitachi firmware is still being developed, and the ETA is unknown.
iXtreme 1.6 can be downloaded using Xbins.
A new version of JungleFlasher (v0.1.60) has also been released. JungleFlasher is a Windows application that can read and flash all Xbox 360 DVD drives with most SATA chipsets.
JungleFlasher can be downloaded here or here.
The tutorial for JungleFlasher has also been updated and can be downloaded here or here.
If you prefer using iPrep, there are updated definitions files to allow loading the iXtreme 1.6 firmware. There are updated definitions for iPrep versions 006.x and for iPrep version 008/009. You only need to download the definition file corresponding to your preferred version of iPrep. (The definition file for 008/009 will work with iPrep 008.8 , 008.9, and 009.0)
iPrep 006.x Definitions Update
iPrep 008/009 Definitions Update
Thanks goes out to Team Hyper X, Team Jungle, and everybody who made this possible.