I had already disabled the automatic driver update and the manual driver update in the device manager fails, because the 12.4.3.9 is older than the Microsoft driver (13.3.0.137) and Windows doesn't offer an option to install it anyway.
So, at the moment, the only way to get rid of this driver seems to be, to delete the inf and sys files from the Windows directory. But that might be a little bit risky. Has anybody experience with that? The driver files appear multiple times an in several subdirectories. Do a have to delete all of them, or only those in one specific folder?
Thanks everybody.