Dell offered the latest Bios through Dell Command Update and it updated OK. I'm not sure I like the fact that SafeBIOS was forced on us without a choice and that it cannot be turned off.

The main concern is like many times before Windows 11 device manager does not update so still shows 1.18 in Firmware. System info shows 1.20.

Now windows update is offering Dell Firmware 1.20. Although currently in optional updates I'm sure this will move into standard windows updates and auto install. This need looking at as I can see that breaking things.

Since updated the bios from 1.18 to 1.20, my fingerprint scanner has stopped functioning. Initially I thought it was a Windows problem, but after some troubleshooting, the BIOS update appears to be the most likely culprit.

@recursor01​ I see there is an update for the fingerprint scanner here https://www.dell.com/support/home/en-uk/product-support/product/xps-15-9520-laptop/drivers

I would check that it is applicable to your model first.

Hi there,

update of BIOS to v 1.20 does not work at all.  Tried several times now either via Dell Update command or Support assisst.  After 15 minutes staring at a moving circle the only feedback I get is:  "An error occurred during the installation. The installation could not be completed."

Support assisst tells me to reboot , which is in this case utter nonsense.  It has no effect at all.

Kể từ khi cập nhật bios từ 1.18 lên 1.20, màn hình cảm ứng của tôi đã ngừng hoạt động. Tôi đã thử đặt lại BIOS về mặc định của nhà sản xuất nhưng nó vẫn không hoạt động. Có vẻ như việc cập nhật BIOS là thủ phạm rất có thể xảy ra.

My touch screen doesn't work, when I'm in bios mode

I have an XPS 9500 that auto installed the firmware update on 4/11/25. It installed successfully, then failed to boot due to memory errors. I had to remove one of the 32 gig DIMMS to get it to boot. I have not tried rolling back the BIOS to see if that same DIMM will work yet, I'm going to to try that next week.