hi guys, i really want to try this firmware but how do i get the 422 upgrade or is this just HW at mo, i'd atleast like to try the supercharger 231 but cant get it to work

ive tried downloading the beta firmware tried copy n paste 2 files like it said but aint showing up in my software options.im not very good with computers and stuff like this so can someone please explain simply for me step by step how i do this please .. i have the supercharger file in with my SP v1.32 folder so im not sure where im going wrong

thankyou in advance