Im not too exited about this, in fact im going to leave the samsung drive in my spare xbox virgin. A softmod is easier in every way, does a whole lot more, and is just as free.
The biggest problem with this is the DVDs themselves. The images required to boot are very different from the normal xiso format used by chips and softmodders. What is needed is a full image, made by hotswapping discs in a PC (similar to how 360 games are rippeed). Then the security track must be readded through a hex editor and it is different for each game. Finally, regardless of size, the disc must be burned onto a dual layer.
The only advantage of this is to play on live, but im not paying $60+ for a live account especially since M$ is probably going to detect this within 2 weeks and ban it.
Now that im through being negative, like Commodore4Eva said, this firmware was only done for him to learn more about the drives to help in hacking the 360. A release for that system won't be so pointless as its the only mod available.