EM7511 on CF-20 unable to load latest driver

IoT Modules
1

I am having problems for the driver for EM7511 to load on a Windows 10 64 bit toughbook CF-20. When I download the latest build from Seirra website ( Windows Drivers for EM/MC Series Modules (Build 5087)) the toughbook doesn’t load a Seirra driver, but the windows driver for it. I have tried uninstalling and removing the device, etc. no luck. Anyone any ideas? Thank you. Arne

2

what do you mean by loading “the windows driver for it”?
Do you have screenshot of the device manager?

3

by loading the drivers I mean when I run the exe that I downloaded from Sierra website, it doesn’t set up the drivers for the EM7511. When I go into device manager I find the generic windows driver attached. See screenshots

About
About749×906 23.8 KB

application
application1194×701 258 KB

device mgr
device mgr1307×1050 249 KB

winver
winver700×628 35 KB

.

4

Can the modem port be used with AT command communication?

5

Not sure what you are asking. Under modem it list Sierra Wireless WWAN Modem #2. The driver here is Sierra Wireless Incorporated with data of 4/22/2020 and version 20.4.1005.45.

We are using the toughbooks with ATT FirstNet SIM cards.

6

it is because you are using MBIM driver of Windows:

image
image1324×1036 113 KB

If you use RMNET instead of MBIM in AT!USBCOMP, then it will switch to Sierra driver.

7

I understand better now, but how do I make that change?

8

you can use tera term to connect to modem port and type:

at!entercnd="A710"
at!usbcomp=1,3,10d
AT!reset

After module reboots, it will show another Sierra driver

BTW, why don’t you just use the MBIM driver from Microsoft?

9

Thank you, I’ll give this a try.

I am not aware how I would obtain the MBIM Microsoft driver. I was assuming the best driver to use is the one from the vendor. We have had some issues with connectivity especially switching between Cellular and WIFI.