After the BIOS update can not startup Satellite C640 using USB key

After upgrading my bios Toshiba Satellite C640-10F (PSC02E) to WIN 2.00, I can't boot the laptop using USB key, when I checked the BIOS with F2, I was stunned because the USB port connected to the laptop has been labeled as FLOPPY drive. Y at - there no possibility to downgrade the BIOS?

Thank you

Stand by.
Set the BIOS to default and after restarting, use F12 to get into the boot menu.
USB option is available there?
What is saved on your USB device? I mean why do you want to use device USB to boot from it?

Tags: Toshiba

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