Hi, I have been looking for documentation on how to set up and use the EM9291 module with a host device, such as a Raspberry Pi. Do we have any documents outlining the steps to set up, configure, and test the EM9291 module via the USB interface? Additionally, could you please provide the details …

correct! your linux should already support MBIM driver, so qcserial driver in MBPL can help to enumerate the USB serial port

Hi, Thanks for the prompt response. As mentioned, my module is EM9291. Will the same steps work for this module also? Also, my host is ARM64 architecture. From where can I get the lite-qmi-connection-manager binary for my host? I will need the source code to build it for my host.

the method of installation of USB driver is the same For the source code of connection manager, please download MBPL_SDK_R44_ENG5-lite.bin.tar

Hi @jyijyi , I followed the steps you mentioned in the document. but I m getting: AT!GSTATUS? ERROR AT+CGDCONT OK AT!SCACT=1,1 ERROR I am also not getting any ip on wwan0 device. can you please suggest if I am missing anything.

what are the return of the followings? ati3 AT!ENTERCND="A710" AT!SKU? at!IMPREF? AT!selrat? at!SDPREF? At+cpin? At+cfun? At!pcinfo? at!band? at!band=?

Hi @jyijyi , I have conected my EM9291 module to the raspberry pi board and it is workig by default without any code change. The driver used is : cdc_mbim [ 423.940703] usbcore: registered new interface driver cdc_mbim [ 425.716250] cdc_mbim 1-1.3:1.0: setting rx_max = 16384 [ 425.716635] cd…

Hi @jyijyi , please find the output of the commands you asked for: ati3 Manufacturer: Sierra Wireless, Incorporated Model: EM9291 Revision: SWIX65C_02.15.01.00 5268b2 jenkins 2023/11/17 22:12:47 IMEI: 358186652504866 IMEI SV: 2 FSN: 835212742102B1 +GCAP: +CGSM AT!SKU? !SKU: 1105097 at!I…

it is using MBIM interface. Is it OK now to set up mbim-network for data establishment? [image] EM9191 MBPL install error IoT Modules i used MBIM command to establish data connection in linux PC: owner@CNHKG-EX-001367:~/legato/workspace/git/mangOH_2-7-2019$ …

Hi @jyijyi Yes I am using mbim only but getting error. root@imx8mp:~# dmesg | grep -i cdc [ 1.809915] usbcore: registered new interface driver cdc_ether [ 1.821743] usbcore: registered new interface driver cdc_ncm [ 1.827440] usbcore: registered new interface driver cdc_mbim [ 1.86…

If you ignore those error, Is it OK now to set up mbim-network for data establishment?

Setting up EM9291 Module

IoT Modules

jyijyi October 21, 2025, 6:50am 8

qmi_wwan is for RMNET driver
You need to check whether AT!USBCOMP? is using RMNET or MBIM.

But please note that rmnet is not quite recommended for users for EM9 module, MBIM is more preferred:

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Setting up EM9291 Module

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