I could succesfully test this certificate with the drivers that are on the phone itself (with firmware v3.0).
The SETUP.EXE with the drivers is on the CDROM drive when you connect the phone to a PC.
The certificate can be imported in windows so the drivers for adb interface and usb qualcomm interface for QFIL are signed and install without yellow exclamation marks.
The certificate is extracted from the qualcomm drivers package from the another forum forum.
InnosD6k_Drivers_Certificate.zip (Size: 133.76 KB / Downloads: 64)
The SETUP.EXE with the drivers is on the CDROM drive when you connect the phone to a PC.
The certificate can be imported in windows so the drivers for adb interface and usb qualcomm interface for QFIL are signed and install without yellow exclamation marks.
The certificate is extracted from the qualcomm drivers package from the another forum forum.
InnosD6k_Drivers_Certificate.zip (Size: 133.76 KB / Downloads: 64)