usb-c port not detecting extra displays following bios update

[xahkz]

bios update from this week has made the usb-c port unusable for adding extra monitors. port for example works for portable ssd hard drives

this was working before the bios update

attempted to rollback bios but boot process ignored Win Key + B or Win Key + V. 

[resistencia]

Hi @xahkz 

It is important to know your laptop model, try doing a power reset and test the monitors.,

HP PCs - How to power reset your computer | undefined

[xahkz]

What do you mean, know the model? I've used this laptop for over 2 years now , this usb c port issue happened after the bios update othe. The extra monitor is essentially new so not sure what to test.

Anyway the assistance I'm looking for is around the port and rolling back the bios update. 

[resistencia]

When requesting assistance, you must indicate the model of the laptop. Not all models can roll back a BIOS update.

Have a nice day.

[xahkz]

Phew, at  succinct gesture finally, model is  the zbook hp firefly 14 g8 laptop.

[resistencia]

See page 13 and 63 

HPBIOSSetup.pdf

BIOS Rollback Policy Setting Behavior when attempting to roll back
to a previous BIOS version. The setting
can be set to Unrestricted Rollback to
older BIOS or Restricted Rollback to
older BIOS.
Unrestricted Rollback to
older BIOS