"I also found a post about how someone got the usb boot to work by changing the legacy state around for a bit untill it showed the USB-HDD option in the menu after pressing F11."
made sure USB Legacy Support is Enabled(can be named USB KB/Storage support as well). format the stick in FAT32, instead FAT16(some USB sticks are picky, usually cheapest one like PQI).
it could be detected as USB-HDD, USB-ZIP. if no change try with different USB stick.