Hi. I hope there is somebody here on this forum and reading this topic. I trying to overread the default windows driver for usb audio device. I created the the .inf file and i trying to install it using rundll32 advpack.dll ... I do it successfully and i see that OEM inf file added to windows inf directory, but when i plug in the device it still uses default driver. If i manually install my .inf from the device manager it works fine. I know that this happend because my file is without certificate, but maybe there is still a way to make my driver to become default driver for my device? If not, how can i SIGN my inf file? Thanks in advance.