Originally Posted by luigi90210

i dont think you understand the analogies other users posted
think of it like this, you buy a DVD, the DVD is yours to use(meaning the physical disk), but you are not allowed to modify the contents of the DVD without the IP holders permission because the content itself doesnt belong to you

the E-Tune is pretty much the same thing, its there, you can use it, but to modify it you have to obtain permission(in this case, get the password) in order to modify the tune

EDIT
just wait for uprev to email you back, chances are that they will unlock it for you and if they dont, they will tell you why