Updating a BIOS is rarely necessary unless you are solving a specific problem. For the 6.00PG version, common reasons include:
It is highly recommended to flash via rather than Windows to avoid crashes. Method A: Using a Bootable USB (Recommended)
Phoenix Technologies is a major developer of BIOS and UEFI firmware, commonly found in laptops and OEM desktops from manufacturers like Acer, ASUS, HP, and Toshiba.
If you have a .fd or .bin file or if the Windows flasher fails, you may need a bootable USB.