lenovo g560 replace wifi card

hi,

i've just signed the Lenovo petition - hope it will change something!
but anyway, i'm stuck with my intel 7260 HMWWB card that i've bought to replace the broadcom one that came with my lenovo g560 laptop.

i've read here that i need to modify my bios.
so here you have some files of mine:
my current bios backup (LENOVO-29CN38WW(V2.15), original unmodified bios from lenovo (NIWEx215_X64) - link
help would be appreciated !!
and also some quick explanation how to do an usb bios backup in case i brick my laptop please!

many thanks

arek m