USB driver install fail on Window 7, 8 (nRF52840, nordic_cdc_acm.inf)

[yunjoo727]

Dear all

[Test Environment]

Device : nRF52840 DK (V 1.0.0)

Example : SDK15.2.0 / usbd_cdc_acm

Driver : nordic_cdc_acm.inf ( nRF5_SDK_15.2.0_9412b96\examples\usb_drivers )

OS : Window 7, Window 8

We are testing usb example. 

I had successfully installed driver on my pc.(Window 7)

However, the installation failed on other PC.(Window 7 : 2 pcs, Window 8 : 2 pcs)

I found this in the link below.

https://docs.microsoft.com/ko-kr//windows-hardware/drivers/usbcon/supported-usb-classes

"In Windows 8.1 and earlier versions, Usbser.sys is not automatically loaded. To load the driver, you need to write an INF that references the modem INF (mdmcpq.inf) and includes [Install] and [Needs] sections."

nordic_cdc_acm.inf  contains the usbser.sys and mdmcpq.inf files.

I could find usbser.sys on my pc. (Window 7)

I could not find usbser.sys on other pc. (4 pcs)

usbser.sys Path : C:\Windows\System32\drivers

Is ther a way to install this properly in the window 7, 8?

or can you provide updated driver?

Thanks!

Best regards

Yun-joo Kim

[yunjoo727]

The error message is as follows.
"The service installation section in the INF is incorrect."

[Stian Røed Hafskjold]

Hi, I reported this internally. Will come back with a proper answer as soon as possible.

[yunjoo727]

Hi, Stian

Thank you for your help.

Once you know the solution to this issue, please share it.

My customer is waiting for an answer for a long time.

Thanks!

Best regards,

Yunjoo

[hmolesworth]

Interesting; just today I had this exact same problem where the nRF52 Dongle showed up as "nRF52 USB CDC BLE Demo" but with no COM port; I had to select the driver via right-click->Update Driver Software and navigate to the link you provide above (.\nRF5_SDK_15.2.0_9412b96\examples\usb_drivers\). This worked ok on Windows 8.1 and Windows 7 where it now shows as eg "nRF52 USB CDC BLE Demo (COM8)" ; I think I also did this on Windows 10 but memory is hazy on that ..

[yunjoo727]

Hi, Stian

There are updates.

First, In Windows 7, driver update was successful after changing as below.
We moved usbser.sys to this path(C:\Windows\System32\drivers) and updated the driver.

Seconds, In Winodws 8, the driver was successfully updated after the change as shown below.
However, after the reboot, the driver is not recognized again.
https://youtu.be/MSCTkz3ucV8

From the above test results,
In Windows 7, it seems to be related to usbser.sys.
In Windows 8, it seems to be related to the driver signature.

I also share another post about that.

devzone.nordicsemi.com/.../struggling-to-make-nrf52840-dongle-run-on-windows-7-8

Can you provide drivers for windows 7 and 8 without the above settings?

I will wait for your reply.

I really appreciate your help.

Best regards,

Yun-joo