HP 15-N033SL unlock request

Hi, I've got a Pavillion 15-n033sl with a dual gpu graphic (Intel Hd4000 + Amd 8670M) but Switchable Graphics Mode option in the bios is hidden, could you help me?
This is bios link:
http://ftp.hp.com/pub/softpaq/sp67001-67500/sp67140.exe
Many thanks in advance