XPS 8940 (march 2021, the warranty is good). Windows 10 Enterprise. Cannot update BIOS to 2.2.0. Not from Windows (XPS_8940_2.2.0.exe), not from USB stick, BIOS Boot Menu (XPS_8940_2.2.0.exe, nor BIOS_IMG.rcv), not from Dell Update 4.4.0 application, not from Windows Update. It's restarting, after that black screen (power button light is on, solid white) forever, monitor shows "No HDMI signal from your device". When manually start the comp - bios still 2.1.3. Tried to downgrade it to 2.1.1. After that can update to 2.1.3 with no problem. But not to 2.2.0.