Fujitsu provides explicit pre-upgrade steps, such as requiring an AC power source and administrator permissions, which are critical for preventing power-related failures during the flash process.
so you clicked on this video chances are that you own a Fujitsu Exo Q55655. Q556/2 a series of mini pieces first released in 2015. Fujitsu Globalhttps://support.ts.fujitsu.com DeskUpdate - Fujitsu Support fujitsu bios update tool
If you need to revive an old Fujitsu desktop or update a critical server, this tool is unavoidable and stable once you get it running . However, for casual home users expecting a Lenovo/HP-style one-click updater, this is a frustrating chore. Be prepared to read the manual. Fujitsu provides explicit pre-upgrade steps