hi all, i'm trying to update the firmware on my Crucial SSD, unfortunately crucial does not have a program to automatically update the firmware via internet, for mac. A bootable image file is provided and i have successfully burned it onto a USB, not thru the optical drive because my SSD is now in replace of it. Anyways, booting the system holding ALT(Option) does not bring up the USB and under Preference > Startup disk the usb is not showing up. Is there another way to install this image file? Thanks In Advance.