XPS USB and SD Card Reader not working after last bios update

Hi,

USB mass storage stopped working after the last bios update. I didn't pay much attention to the details of the update but I do remember some changes on the USB controller.

now I can still use USB accessories (mouse/keyboard/etc) but I can't use anything regarding mass storage (USB, SD card reader, etc.)

Checked BIOS config and everything is ok as it should.

Tried with both, Windows and Linux. Both were working before the last update and both are failing now.

Any advice?

thanks