It was. “Normal” devices don’t have FCC Auth, so it was clear that this was an OEM device.
The bug I am talking about is that your driver does not send the FCC Auth for the EM7565 on Windows. It is a bug because you send it on the Linux driver (although for the 9x15 series according to source code, but it might still get sent on other devices).
Why is this important? I doubt that Lenovo will alter the drivers they get from you.
Btw I haven’t seen devices locked to a specific BIOS, how would you acomplish that anyway? Those are USB devices. The Lenovo BIOS might check the USB-ID, but that’s not a restriction from your side.
There might be an issue with your drivers, deal with it, don’t redirect users to different places without a positive outcome.