The USB BIOS Flashback process usually takes one to two minute. The light staying solid means the process has completed or failed. If your system is working fine, you can update the BIOS through the EZ Flash Utility inside the BIOS. There’s no need to use the USB BIOS Flashback features.

How do I know when BIOS Flashback is done?

Press the BIOS FlashBack™ button for three seconds until the FlashBack LED blinks three times, indicating that the BIOS FlashBack™ function is enabled. *The BIOS file size will affect the update time. It can be completed in 8 minutes.

How long should BIOS update take?

It should take around a minute, maybe 2 minutes. I’d say if it takes more than 5 minutes I’d be worried but I wouldn’t mess with the computer until I go over the 10 minute mark. BIOS sizes are these days 16-32 MB and the write speeds are usually 100 KB/s+ so it should take about 10s per MB or less.