Last Thursday my Firefly G8 updated to the latest BIOS 01.01.32 Rev. A via HP Support Assistant followed by a number of Win10 Updates. Since this point in time, I can no longer use my (single) monitor, mouse, keyboard etc. connected to theUSB Dock G5. Interestingly enough, the Dock still turns on and charges my Firefly.
Steps I took in an attempt to correct this:
1.) Downgrade to BIOS Version 01.01.04 Rev.A
-->Result: Still no function of USB Dock beyond charging and on/off
2.) Reset Win64 to factory conditions
-->Result: Still no function of USB Dock beyond charging and on/off
3.) Re-Upgrade to 01.01.32 Rev. A by sp113061.exe without the HP Support Assistant
In the process of doing that I noticed that there's a significant pause after the update of the Management Engine Firmware reaches 100%
At this point, the update process enters Phase 2 after a restart without updating any other components.
-->Result: Still no function of USB Dock beyond charging and on/off
4.) I ran sp113061.exe again to see if a second try would be more successful. I've noticed that some components that were expected to be updated (I think) like the USB-C controller firmware didn't update. They also didn't update during the second run of sp113061.exe.
-->Result: Still no function of USB Dock beyond charging and on/off
5.) When I intermittently connect my EliteBook 735 G6 to get some actual work done, it uses the Dock G5 without problem. The Dock has the latest firmware.
Steps 3 and 4 were done using a classic non-USB-C power supply to take the USB-C port out of the equation for the BIOS update.
If somebody has any further insights I'd really appreciate it.