My brother is trying to flash his XB360, here is a cut/paste of his email: (can anyone offer some advice?)
I have an Xbox360 with a TS MS28 drive that I cannot flash. I can dump the original bin just fine no matter what program I use. I have read the textbook.pdf and did exactly what it said. I have a VT6421 PCI card, I have used a usb flash disk as well as a floppy disk. I used IPREP 1.01 with the latest updates and I am able to use the IDUMP command with my serial # and that works fine. After I reboot I try the IFLASH command with my serial # and it shows my Xtreme Pri Master option, I then turn the xbox off and hit 1 and I wait 10 seconds and turn it back on. I get the message (backup.bin for xxxxxxx xxxxx doesn’t exist) Aborting. I then try Xtreme Boot Maker vo.5.3(RC3) and the XREAD command works fine, but when I use the XFLASH command it shows my Xtreme Pri Master option, I then turn my xbox off and hit 1, wait 10 seconds and back on. I get the message (ERR: Fail to open input file!) I am in need of any help on this matter.
Thanks for any/all help!