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.

How long is BIOS flashback?

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 often should you flash your BIOS?

In general, you shouldn’t need to update your BIOS that often. Installing (or “flashing”) a new BIOS is more dangerous than updating a simple Windows program, and if something goes wrong during the process, you could end up bricking your computer.