ok noob speak
you need 3.55 console
you need on that console otheros++
then install Linux (ubuntoo or whatever)
use the guides to get your unique key
do nothing with that key because at the moment, there is nothing to be done with it.
also* if you have a newer metldr2 machine, dont even bother,
also** if you have a 3.56+ firmware, dont bother. unless you want to progskeet it and downgrade back, then do start at step 1