xbox 360 mod problem

hellow peoples i have recently tried to upgrade my ixtreme 1.5 to 1.61 and i back up the dummy.bin but now when i am installing new firmware it says serial matches with the firmware and i have erased my liteon drive so can any one help me?
Answer #1
any one can help?
Answer #2
Pretty sure the key is still in the dummy.bin, read that file out, and replace the key of the firmware.
Answer #3
how do i do that?
Answer #4
u could just open it in JF and it tells u the dvd key
Answer #5
devil i know it says dvd key matches with the firmware key so i cant do anything can any one give me their dummy.bin