Is editing a driver's *.inf possible?

[chants]

The correct strategy is as far as I know to update to the vendor specific driver. PCI001 will be broken, so you go into device manager, do a "driver rollback", and it will go back to a working driver for that device only, and it will blacklist the new driver for that device. Probably some special exclusion registry key gets set on a per device basis.

Changing the .inf is not the right approach as you point out because of signing. Likely there is no automatic loading. What is most certain is the driver installation oversteps. So you have to let it overstep, then undo the damage on a device by device basis such as with a rollback.