Hi, I do have non working EM9190 - it is on Sierra Warranty but they told me it is “child device” (it is extracted from Cradlepoint R1900) and they refuse to generate RMA. Module stops working when carrier firmware was upgraded. I do belie module rejects firmware (no AT command is possible). I’ve …

only have this one 01.07.19.00, see if it helps: [image] Upgrade of old EM9191 firmware and band N40 support MC/EM Series I have a backup file in my PC:

Hi, I do have 01.07.19.00 - I would like to try the one with was delivered with module 01.07.13. This is my last hope for the EM9190. Regards Chris

I don’t think you can downgrade the version as it might have different partition size

Hi, I was able to locate the firmware - firmware was loaded, but result is very same - modem is starting, it will present: EM9190-CP Sierra Wireless DM Port (Com3) Sierra Wireless WWAN Modem in Windows (in linux it will present ttyUSB0 and ttyUSB1) the problem I have: no AT connection possibl…

How about at!rmareset command? [image] EM9191 remains in WCDMA and does not latch to LTE MC/EM Series does upgrading FW help? does “AT!RMARESET” help?

“the problem I have: no AT connection possible to any port (same in Windows as in Linux).” “So FW downgrade (same as upgrade) did NOT resolve the problem I have”

How about using qmicli? [image] Reset AT!ENTERCND password MC/EM Series AT!ENTERCND=“A710” ERROR I’ve tried qmicli -d /dev/cdc-wdm0 --dms-restore-factory-defaults=“000000” hoping that would restore the default creds, but no luck. Please, how do I reset the nvram/force …

sudo qmicli -d /dev/cdc-wdm0 --dms-restore-factory-defaults=“000000” error: couldn’t open the QmiDevice: Operation fimed out: device is closed it looks like is not working too … - Every single qmicli command against /dev/cdc-wdm0 result is same /dev/cdc-wdm0 is “visible” under /dev/ folder - unt…

EM9190 . EM9191 fw problem

IoT Modules MC/EM Series

jyijyi June 16, 2023, 12:17pm 6

How about at!rmareset command?

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EM9190 . EM9191 fw problem

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