Get a clean nand of your model and put your dvd key in it. I believe most of the xtreme packages has it.
stop suggesting this kind of bull$#!t damn you noob, did you even read what he said?
@ OP , it's not hard to rebuild a firmware from those files, use manual spoofing in Jungleflasher after having loaded LT in target firmware.
Then again there's guides on this subject, and does not require a thread.