BIOS update screen frozen and not displaying correctly

I tried to update the BIOS on my Framework 13 7840u mainboard on Windows 10 from version 3.3 to 3.18 but after restarting it displayed the following screen and has been stuck there for an hour. I can’t turn it off either as it doesn’t respond to short or long pressing the power button. Is there anything I can do other than disconnecting the battery, which will probably brick the mainboard?

The update screen doesn’t seem to be displaying correctly, I tried a 4k TV and 1080p projector.

Hi, did you keep the power supply connected while updating the BIOS?

Yes, I’ve left it plugged in but tried unplugging it and nothing happens

I wouldn’t know what to do other than disconnecting the battery, I’m sorry.