Hey Guys,
Just alittle problem

Ok... I'm haveing no luck with flashing my 360 (samsung ms28) correctly.
I have made the usb bootdisk with Bootmaker 5.3 rc1
Extract Ixtreme10
Rename "xtrem10a.bin" To "hacked.bin"
Run "Toolbox 3.1"
open Orig.bin and copy the key, then open "Hacked.bin" and copy the key into that. Then copy the hacked.bin into the usbstick
Then i run it and type the command mtkflash w /m /sata hacked.bin
Then it Updates 4times and Done!
Origionals work but backups wont (the backups DO work on other 360s) i have done this over and over again. I have read and re-read the tutorials. What have i missed?

Many Thanks