# EM9191 Network Scan Not Working **URL:** \ **Category:** MC/EM Series\ **Tags:** debug, driver\ **Created:** [May 23, 2023, 9:58pm UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835 "2023-05-23T21:58:45Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 23, 2023, 9:58pm UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/1 "2023-05-23T21:58:46Z")
Hi all, I have a EM9191 running FW SWIX55C\_03.09.11.00. The antenna and sim card are both configured. The driver is correctly installed: ```auto $ lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M |__ Port 1: Dev 4, If 0, Class=Communications, Driver=cdc_mbim, 5000M |__ Port 1: Dev 4, If 1, Class=CDC Data, Driver=cdc_mbim, 5000M |__ Port 1: Dev 4, If 3, Class=Vendor Specific Class, Driver=option, 5000M |__ Port 1: Dev 4, If 4, Class=Vendor Specific Class, Driver=option, 5000M ``` However, **it cannot scan the operator network**. The related AT command history is copied: ```auto ati Manufacturer: Sierra Wireless, Incorporated Model: EM9191 Revision: SWIX55C_03.09.11.00 7bf975 jenkins 2022/06/10 20:36:01 IMEI: 355890347254372 IMEI SV: 22 FSN: 783126231903B1 +GCAP: +CGSM OK at!band? Index, Name 00, All bands, 0 - GW: 100600000FC00000 1 - LTE: 0000A7E2BB0F38DF 0000000000000042 3 - NRNSA: 000081A0090808D7 0000000000007042 4 - NRSA: 000081A0090808D7 0000000000007042 OK at!impref? !IMPREF: preferred fw version: 03.09.11.00 preferred carrier name: GENERIC preferred config name: GENERIC_030.044_001 preferred subpri index: 000 current fw version: 03.09.11.00 current carrier name: GENERIC current config name: GENERIC_030.044_001 current subpri index: 000 OK at!selrat? !SELRAT: 00, Automatic OK at!selrat=? !SELRAT: Index, Name 00, Automatic 01, UMTS 3G Only 04, LTE Only 05, 5G Only 0E, UMTS and LTE Only 0F, LTE and NR5G only 10, WCDMA and NR5G only OK at+cops=? ERROR at+cops? ERROR at!nrinfo? !NRINFO: Connectivity Mode: --- Connectivity Mode: --- NR5G Cell ID: --- NR5G band: --- NR5G Carrier ID: --- NR5G dl bw: --- NR5G ul bw: --- NR5G Tx Power: --- NR5G Tx chan: --- NR5G Rx chan: --- NR5G dl MIMO: --- NR5G ul MIMO: --- NR5G(sub6) RxM RSSI (dBm): --- NR5G(sub6) RxD RSSI (dBm): --- NR5G(sub6) RxM1 RSSI (dBm): --- NR5G(sub6) RxD1 RSSI (dBm): --- NR5G(mmw) Rx0 RSSI (dBm): --- NR5G(mmw) Rx1 RSSI (dBm): --- NR5G RSRP (dBm): --- NR5G RSRQ (dB): --- NR5G SINR (dB): --- OK ``` By executing `$ sudo ./bin/lite-qmi-connection-managerhostx86_64` from SDK sampleApps, we got similar error ```auto 10 NetworkScan may take a few minutes. Result will be displayed when available. Please wait... Please select one of the following options or press 'q' to exit: 1. start a single-PDN data session 2. Start one connection of a multi-PDN data session 3. Stop one connection 4. Stop all active connections 5. Display all profiles on the device 6. Display one profile on the device 7. Create a profile on the device 8. Modify an existing profile on the device 9. Delete a profile from the device 10. Scan available networks 11. Enable QOS Event 12. Disable QOS Event 13. Request QOS Expanded 14. Get QOS Information 15. QOS Indication Register 16. Read QOS Data Statistics (SWIQOS) 17. Read QOS Extra APN Parameters (SWIQOS) 18. Get Packet Statistics 19. Get Current Channel Rate 20. Toggle pinging on connection 21. Toggle routing table update on connection 24. Enable QMAP 25. Disable QMAP 26. Enable/disable WDS event report indication 27. Enable/disable keep data session alive (q)uit to exit: unpack_nas_PerformNetworkScan: unpacking function error 1003 unpack_nas_PerformNetworkScan errorCode: 1003 - Unexpected error occurred during processing ``` ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [May 24, 2023, 1:00am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/2 "2023-05-24T01:00:44Z")
What is the return of the followings? At!entercnd=“A710” At+cfun? At+cpin? At!gstatus? At!pcinfo? ---
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 24, 2023, 1:55am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/3 "2023-05-24T01:55:39Z")
```auto At!entercnd="A710" OK At+cfun? +CFUN: 0 OK at+cfun=1 +CME ERROR: operation not supported At+cpin? +CPIN: READY OK At!gstatus? !GSTATUS: Current Time: 8792 Temperature: 27 Thermal Mitigation Level: 0 Reset Counter: 1 Mode: LOW POWER MODE OK At!pcinfo? State: Low Power Mode LPM voters - Temp:0, Volt:0, User:0, W_DISABLE:0, IMSWITCH:1, BIOS:0, LWM2M:0, OMADM:0, FOTA:0, NVCRIT:0, RFCAL:0, , RFC_INIT:0 LPM persistence - None OK ``` ---
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 24, 2023, 2:00am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/4 "2023-05-24T02:00:10Z")
I am trying to update the FW but it failed. And now the `at+cfun=1` command failed too… ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [May 24, 2023, 2:02am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/5 "2023-05-24T02:02:07Z")
it says “IMSWITCH:1” in at!PCINFO?, not sure why your image switch in aT!IMPREF has problem ---
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 24, 2023, 2:06am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/6 "2023-05-24T02:06:31Z")
I just trying to update the FW but failed. Does it matter? Or do you think if FW flashing could solve the problem? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [May 24, 2023, 2:08am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/7 "2023-05-24T02:08:12Z")
maybe, as it says image switch now has problem ---
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 24, 2023, 2:30am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/8 "2023-05-24T02:30:08Z")
We have 11 sierra EM9191 in which 1 is old version and it works great while the new 10 arriving last week do not work. In the 10 new EM9191, AT command port is missing and I have to run extra command ```auto modprobe option echo 1199 90d3 >/sys/bus/usb-serial/drivers/option1/new_id ``` to have /dev/ttyUSB1. Besides, network scan is not working too. I will have another new EM9191 withno FW download trying to see how it works. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [May 24, 2023, 2:34am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/9 "2023-05-24T02:34:23Z")
have you compared the OK and NOK module on AT!USBPID? ---
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 24, 2023, 2:41am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/10 "2023-05-24T02:41:05Z")
Not yet. Since the failed FW download make the USB serial port not working, I will try your advice tomorrow in the lab. Thanks a lot! ---
**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\ **Post date:** [May 25, 2023, 8:59pm UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/11 "2023-05-25T20:59:18Z")
The OK and NOK module are the same ```auto AT!USBPID? !USBPID: APP : 90D3 BOOT: 90D2 ``` For the OK module, it has older FW ```auto at!impref? !IMPREF: preferred fw version: 01.07.19.00 preferred carrier name: GENERIC preferred config name: GENERIC_016.010_000 preferred subpri index: 000 current fw version: 01.07.19.00 current carrier name: GENERIC current config name: GENERIC_016.010_000 current subpri index: 000 ``` while the NOK module has the latest FW ```auto at!impref? !IMPREF: preferred fw version: 03.10.07.00 preferred carrier name: GENERIC preferred config name: GENERIC_030.062_000 preferred subpri index: 000 current fw version: 03.10.07.00 current carrier name: GENERIC current config name: GENERIC_030.062_000 current subpri index: 000 OK ``` We are trying to flash the older FW in the NOK board but cannot find it in the [resource](https://source.sierrawireless.com/resources/airprime/software/em919x/em9-approved-fw-packages/#sthash.aEGX27Tc.dpbs). Do you know where can we download the old FW? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [May 26, 2023, 12:21am UTC](https://forum.sierrawireless.com/t/em9191-network-scan-not-working/29835/12 "2023-05-26T00:21:19Z")
How about download other pri setting like at&t and see if cfun can back to normal?