I have sucessfully flashed my Hitachi and now I am doing my Samsung.
I am going to tell you the steps I take to see what I am doing wrong, since everything seems right to me so far.
I turn the PC on while the Hitachi is plugged in.. so it picks up something on the SATA channel (this is the only way I have gotten the Samsung to flash, since my bios does not pick up the Samsung at all...)
The bootup disk loads and I unplug my hitachi and plug up the Samsung, I run the code "mtkflash r /m orig.bin" , that goes well... I did this 3 times to pull the firmware 3 different times to make sure its being pulled accurately and sure enough it is. I open up the KDX tool, copy DVD key and then open up the xtreme.bin and insert the DVD key there, save...reset.
Now I run the code "mtkflash w /m modified.bin"
It flashes banks 0,1,2,3 then says Reset.... cool its done. I boot up the 360 and with any disc I put in, backup or Original.. it would give me the "To play this disc, insert it into an Xbox 360"
I have hexed the key in as an alternative and it gives me the same error. I have searched this site up and down and could not find anything to help me yet, from my searching all I found was that it had to be a problem with the key... which is why I have hexed and used the KDX tool with no luck. Thanks guys
You must use extremeproper.bin, not extreme.bin. Also, KDX is not known for its reliability, so I would recommend you insert your key manually. There are several great tutorials on how to do this.