Sierra Wireless EM9191 EM9190 Firmware Update & IMEI Repair

[JimHelms]

To assist our members with updating the firmware and/or repairing the IMEI on the EM9191 and EM9190, I put together a kit to help simplify the process.

The kit contains a script along with a collection of the firmware it uses. As with any information on this forum, use at your own risk.

Download Links are provided in the document below.

Tutorial for EM9191 Firmware Update & IMEI Repair.pdf

[Cassiel007]

my Sierra Wireless EM9191 will not connect to my pc. The usb dongle adapter works well with Quectel. The adapter green light turns on with Ouectel but no with the EM9191. Do I need a special dongle?

[Didneywhorl]

my Sierra Wireless EM9191 will not connect to my pc. The usb dongle adapter works well with Quectel. The adapter green light turns on with Ouectel but no with the EM9191. Do I need a special dongle?

Yes. The Sierra Wireless has a different hardware design that other cellular modems requiring voltages in two interface pins that are not required on the other brands.

You need an adapter that can engage these pins. This one does: https://thewirelesshaven.com/shop/mini- ... dapter-v7/

[Cassiel007]

Thank you sir! We have hope of having internet once again to have internet

[thisis789]

Hey! ive run into the issue i believe this script is supposed to fix but im having an issue with the script itself?

Some how I've managed to corrupt my IMEI. im guessing too many quick reboots or something? if thats the case im surprised how fragile this it is.. But but, using the script and doing option R, after typing the correct IMEI i need to burn back into it,(its printed on the card itself! im not trying to do anything shady!) the window just closes. no result. looking through the actual file it seems its supposed to compute the command I run into putty. but never get that far, just closes.

Any help getting this fixed would be great, Thanks for putting this out there in the first place, i have hope this card isnt just a brick now! Verizon seems to be letting the modem into the network due to this.

[JimHelms]

Yeah, the EM919X modems can be a little finicky at times.

I would just use putty (without using the script) to access the modem and run the following commands:

Code: Select all

AT!ENTERCND="A710";!IMAGE=0,0;!IMAGE=0,1;!IMAGE=0;!NVRESTORE=0

then, using the command below, substituting the 12,34,..... with your IMEI number, placing a comma between every two digits:

Code: Select all

AT!NVENCRYPTIMEI=12,34,56,78,90,12,34,56

Code: Select all

AT!RESET

Note that these commands must be saved on a text file to change/configure the IMEI (i.e., Windows will alter the quotation marks if one is not careful).

You will then have to update the firmware once again, one at a time.

Hopefully this will help.

[BillA]

Yeah, the EM919X modems can be a little finicky at times.

I was just gonna say that probably the NVM got corrupted.
Do you need to send the authorization before those commands, or this will only restore the original imei?

[JimHelms]

Do you need to send the authorization before those commands, or this will only restore the original imei?

The authorization is included the first AT command. It joins 5 different AT commands into one.

[BillA]

Do you need to send the authorization before those commands, or this will only restore the original imei?

The authorization is included the first AT command. It joins 5 different AT commands into one.

Oh, I see the 5 commands, but doesn't it require a calculated code too, or am I missing something silly here? heh

[thisis789]

Yeah, the EM919X modems can be a little finicky at times.

I would just use putty (without using the script) to access the modem and run the following commands:

Code: Select all

AT!ENTERCND="A710";!IMAGE=0,0;!IMAGE=0,1;!IMAGE=0;!NVRESTORE=0

then, using the command below, substituting the 12,34,..... with your IMEI number, placing a comma between every two digits:

Code: Select all

AT!NVENCRYPTIMEI=12,34,56,78,90,12,34,56

Code: Select all

AT!RESET

Note that these commands must be saved on a text file to change/configure the IMEI (i.e., Windows will alter the quotation marks if one is not careful).

You will then have to update the firmware once again, one at a time.

Hopefully this will help.

That did help, thank you so much, i guess i just needed to know for sure thats how to format it, the official sierra docs are VERY confusing on this command, i didnt know i could just put the computed/shipped IMEI back in like that.

i was a bit confused on the text file needed, I prepped and formatted the command in notepad then pasted into putty, im not sure if thats what you meant but it worked. i had to add an extra 0 at the end to get to the required length(command requires 16 numbers but IMEI is only 15?) but with the steps we are back to where we should be.

1, that first multi command string to get it ready
2, the IMEI command as described
3, AT!RESET
4, then ran the ORIGINAL update script in the download, slightly modded to replace the newest files that were in the zip with the NEWEST NEWEST from the SW website.
5, plugged back into ROOer, everything reads right. back to figuring out the rest of the problems haha

thanks again, this project would have died if i had to buy a new card.

[JimHelms]

5, plugged back into ROOer, everything reads right. back to figuring out the rest of the problems haha

thanks again, this project would have died if i had to buy a new card.

Not a problem. Glad you are back up and running.

I need to update the script when time permits. I started a new one a couple of months ago but have not had the time to finish it.

Did ROOter/DM ever get the band locking module completed for EM9191 modems?

[JimHelms]

Oh, I see the 5 commands, but doesn't it require a calculated code too, or am I missing something silly here? heh

Not sure what calculated code you are referring to. It does not require the same unlock (and generate a code) technique as the earlier Sierra models.

[BillA]

Oh, I see the 5 commands, but doesn't it require a calculated code too, or am I missing something silly here? heh

Not sure what calculated code you are referring to. It does not require the same unlock (and generate a code) technique as the earlier Sierra models.

Ahh I did not know that, as I remember earlier models required a MEP authorization code generated by a keygen script.
So that's no longer needed for random imei's or repairing the original one only in case the NVM got wiped?
Sorry been out of the game for a couple of years. heh

[nvpomuoisau]

I flashed EM9190 with the tool above, then plugged the EM9190 card into the Laptop, the connection status is as shown in the image below, someone help me, thank you very much everyone

[hotcat]

This is correct.
Example(s): Using the example IMEI shown above:
AT!NVENCRYPTIMEI=12,34,56,78,90,12,34,70