Before anything I'd like to thank Grim187 from our XS Forums. With that being said enjoy the tutorial!
First off I'll start by saying what you need for this to work.
VIA VT6421L IDE & Serial ATA RAID PCI Controller Card (I have heard of VT6421A's to work but this is what I'm using so this is what I have to recommend!)
Xbox 360 System (OPEN) and Xbox 360 Power supply.
A Computer with either a BOOTABLE USB Memory stick or a BOOTABLE floppy disk (I DON'T RECOMMEND USING A FLOPPY). My bootable partition was FAT32 and it was booting to Windows ME DOS Prompt
On the BOOTABLE floppy/USB drive you must put Xtrem42b.bin, X360SAM.exe and an edited MTKFLASH.EXE & MTKFLASH.TYP which can be found (here)
Now that I got the items out of the way you need to boot to BIOS and DISABLE every single IDE/SATA Device you have (This is the easy way and bypass's the need to enter the computer with your hands and start pulling out IDE and SATA cables)
Now that you have the bios stuff disabled I'd like you to shut off the PC completely. Bring the Xbox 360 over to the PC and plug it into a AC outlet so it can get power. I'd like you now to unplug the SATA connector on the Samsung DVD Drive in the 360 leaving the Power connector plugged in. Plug a SATA Cable into the 2nd SATA Connector on the PCI Card (the connector furthest from the back of the computer) long enough to reach the 360 Samsung Drive. DO NOT PLUG IN THE PCI CARD SATA TO THE XBOX SATA....YET
Boot the Computer to the Floppy/USB drive. When your presented with A:\ type "mtkflash r /m orig.bin" (without the quotes of course) DO NOT HIT ENTER!!!
I want you now to Plug in the SATA Connector from the PCI Card into the 360 Samsung Drive.
Remove the RF Cover so you can tap the small power button to turn on the 360....Turn it on.
Here is the IMPORTANT PART your 360 doesn't have the AV Cable plugged in so its flashing red...thats fine but you MUST REMEMBER that there is a 3 second timeout in which you CANT hit the power button to shut off the system cause its got lag. You must WAIT at least 5 seconds before you proceed after turning on the 360.
Now that you waited your 5 second timeout period I want you to go ahead and hit enter on the keyboard. I want you to take NOTICE that it says detecting drives for a second and then proceeds. If you did so you should see it freeze while trying to find the drive in the 360...this is NORMAL since this is just a TEST. Hit ESC on the keyboard and you should get a Status 51 Should be 80. If you got this error we are okay to proceed
I'd like you to again type "mtkflash r /m orig.bin" but this time which you see it say detecting drives shut off the 360 EXACTLY at that MOMENT! It should now be frozen where it was before but this time your 360 is off.
Heres the kicker! Turn the 360 back on and it will start to read the MS28.
Now that we have that out of the way we will now type "x360sam orig.bin xtrem42b.bin hacked.bin" (Duh...with out the quotes)
It will proceed to create a hacked.bin BIOS image. Now you will shut the PC and Xbox 360 off and Remove the SATA Connector from the 360 drive. Repeate the steps above again up until the part where you type "mtkflash r /m orig.bin" this time your going to type "mtkflash w /m hacked.bin" and do the same thing as before...shutting the 360 off right as its detecting the Samsung and turning it on after.
If all is done well you should have a Nicely hacked MS28 Drive with the newest (to date) Xtreme Firmware.
P.S - I'd also like to add that my finger once twitched and right when it started to flash I accidently shut the xbox off...woops to me! I turned the xbox 360 back on and typed the command again and it proceeded to flash the drive with out doing anything out of the ordinary.
Sidenote: This will not work with the Xecuter Connect Kit (You will always get Status 80 Should be 70)
I DO NOT TAKE RESPONSIBILITY IF THIS IN ANY WAY SCREWS UP OR BRICKS YOUR SAMSUNG DRIVE. THOUGH IT SHOULD NOT...STUPID STUFF SOMETIMES HAPPENS AND I WILL NOT BE HELD ACCOUNTABLE FOR THAT!