# Error after AT+COPS and AT&F command **URL:** \ **Category:** LTE-M / NB-IoT (Monarch)\ **Created:** [November 5, 2025, 11:00am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245 "2025-11-05T11:00:35Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [November 5, 2025, 11:00am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/1 "2025-11-05T11:00:35Z")
Hello, I’am facing a very strange issue after the following AT command on one of our boards : “AT+COPS=1,2,20801,7” The modem returns : “EXIT: exception: 3 ITYPE: 0x30060 PC: 0x1c20f07c EVA: 0xffffffd4” Could you please help me ? (note : fw version is 8.2.1.0) I tried to make an AT&F command, but it also failed… Thanks ---
**Author:** ![Eros](https://avatars.discourse-cdn.com/v4/letter/e/f04885/32.png) [@Eros](https://forum.sequans.com/u/Eros)\ **Post date:** [November 5, 2025, 4:41pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/2 "2025-11-05T16:41:21Z")
Do you mean it works on other boards but only fail in this board? You could try to type command AT+COPS=1,2,”20801”,7 the 3rd parameter “oper” format is string What AT commands did you used before AT+COPS=1,2,”20801”,7 ? could you also try to type below commands and provide us the output? AT+CEREG? AT+CGDCONT? AT+CGACT? AT+COPS? AT+CSQ AT+SQNMONI=9 ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [November 5, 2025, 11:33pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/3 "2025-11-05T23:33:21Z")
Hi Eros, thanks for your feedback. Yes I have the issue only in one board, and this board was OK at the begining. Find attached the output of my board. I did not see that before, there is an issue with the AT+CGDCONT command. Note : The exactly same software loaded into an other board works (with the same modem firmware version) ! [log\_output.txt](https://forum.sequans.com/uploads/short-url/saw1zuaDFLUERfr7kww7b5YyKq7.txt) (11.0 KB) The outputs of the command you ask me to test are below (it seems that the modem has succeed to connect to the network…) : Ask:AT+CEREG? Modem Answer OK : +CEREG: 2,5,“BD84”,“09A2C807”,7 OK Ask:AT+CGDCONT? Modem Answer OK : +CGDCONT: 1,“IP”,“”,0,0,0,0,0,0,0,0 OK Ask:AT+CGACT? Modem Answer OK : +CGACT: 1,1 OK Ask:AT+COPS? Modem Answer OK : +COPS: 1,2,“20810”,7 OK Ask:AT+CESQ Modem Answer OK : +CESQ: 99,99,255,255,12,41 OK Ask:AT+SQNMONI=9 Modem Answer OK : +SQNMONI: F SFR Cc:208 Nc:10 RSRP:-99.60 CINR:0.90 RSRQ:-13.70 TAC:48516 Id:324 EARFCN:6300 PWR:-78.12 PAGING:256 CID:0x9A2C807 BAND:20 BW:10000 CE:0 OK Thanks, Pascal ---
**Author:** ![Eros](https://avatars.discourse-cdn.com/v4/letter/e/f04885/32.png) [@Eros](https://forum.sequans.com/u/Eros)\ **Post date:** [November 6, 2025, 9:23am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/4 "2025-11-06T09:23:17Z")
Thanks Pascal. The attachment looks ok. I think you could try if factory reset could recover, type AT+SQNSFACTORYRESET, wait for a while and reboot the device. ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [November 6, 2025, 2:38pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/5 "2025-11-06T14:38:44Z")
Thanks Eros, I have tried AT+SQNSFACTORYRESET or AT&F and I always have “operation not supported” error : ![image](https://europe1.discourse-cdn.com/flex018/uploads/sqns/original/1X/22531d21a56af969347b1f3e671532d00dc7e25f.png) I do not understand why the command fails. ---
**Author:** ![Eros](https://avatars.discourse-cdn.com/v4/letter/e/f04885/32.png) [@Eros](https://forum.sequans.com/u/Eros)\ **Post date:** [November 13, 2025, 9:34am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/6 "2025-11-13T09:34:10Z")
Factory reset fail could be due to no restore point created before. The other way you could try is using SFU tool to upgrade & refresh sw. Do you know how to do sfu upgrade and do you have the Sequans FW and sfu.exe? ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [November 13, 2025, 12:03pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/7 "2025-11-13T12:03:03Z")
Thank you, Eros, I’m familiar with this tool, but on our board there is no direct link implemented between the modem and a PC via the UART port. We were expecting FOTA to be available, but it seems that with our current firmware revision (8.2.1.0), this is not possible. Even the `AT&F` command fails (although no restoration point is required). Do you have any suggestions? If not, I assume there is no way to properly “clean” the module’s flash memory. My guess is that something went wrong in the memory, causing the firmware to become unstable. My main goal is to understand what happened so we can prevent the same issue from occurring on other boards. I f you have any suggestions…. Thanks, Pascal ---
**Author:** ![Eros](https://avatars.discourse-cdn.com/v4/letter/e/f04885/32.png) [@Eros](https://forum.sequans.com/u/Eros)\ **Post date:** [November 13, 2025, 5:12pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/8 "2025-11-13T17:12:56Z")
I see, I will suggest you to use DM light to download the crashdump first. The crashdump file might provide us some information. Also, if you remember what ‘s the scenario you used ( or what’s the AT commands you used ) before the issue, that will be help. Do you know the DM light tool? which is the debug tool to check modem status and capture debug logs. ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [November 14, 2025, 10:04am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/9 "2025-11-14T10:04:38Z")
Thanks Eros, could you please give me some documentation and links to download this tool ? I will see if it is possible to use it to get some modem logs through our board. Have a nice day, pascal ---
**Author:** ![Eros](https://avatars.discourse-cdn.com/v4/letter/e/f04885/32.png) [@Eros](https://forum.sequans.com/u/Eros)\ **Post date:** [November 17, 2025, 11:01pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/10 "2025-11-17T23:01:46Z")
Sorry, Pascal. I forgot to mention the DM light tool also require the direct link to PC, usually we use UART1 interface. If your board use UART0 to connect MCU and modem, it’s possible to go through MCU but need to implement by-pass mode in UART0. But it require some effort. you mentioned “there is no direct link implemented between the modem and a PC via the UART port”, if there are reserved test points for UART1 pins which we could use? ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [November 19, 2025, 9:10am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/11 "2025-11-19T09:10:36Z")
Hello Eros, thanks for your answer. We can manage to add some wire between UART1 and a USB-to-UART bridge but it will take some times, we have many other things to do before. I will come back to you when it is done. Thanks ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [December 20, 2025, 12:08am UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/12 "2025-12-20T00:08:11Z")
Hello Eros ! We managed to modify our software in our board to get log from the modem using your DMtool. Please find attached the crash dump I have extracted from the modem. Thanks for your analysis. Have a nice week, pascal [crashdump-2025-12-19-16h07m08.dmcd](https://forum.sequans.com/uploads/short-url/yX4UDXFoDuu2qivPIkIkpW5O5iL.dmcd) (192.9 KB) ---
**Author:** ![Pascal\_Adolphe](https://avatars.discourse-cdn.com/v4/letter/p/258eb7/32.png) [@Pascal\_Adolphe](https://forum.sequans.com/u/Pascal_Adolphe)\ **Post date:** [January 29, 2026, 5:16pm UTC](https://forum.sequans.com/t/error-after-at-cops-and-at-f-command/245/13 "2026-01-29T17:16:38Z")
This issue seems to be linked to firmware revision LR8.2.0.2-59200 (internal memory flash corruption) and it is solved in later revision