MC7455 / EM7565 vs. Quectel EP06 IMEI Change

[jasontang401]

=================================================================
AT!OPENLOCK?
The encryption key must be calculated based on the above challenge response, then entered via:
AT!OPENLOCK="xxxxxxxxxxxx"
AT!NVIMEIUNLOCK
==================================================================
Anybody knows how to calculate the encryption key-xxxxxxxxxxxxxxx? thanks.

[jasontang401]

Couldn't find any reference to imei repair for Sierra modems in those links.
However, if it gets wiped out during a bad flashing process, then it could be REPAIRED with the SAME IMEI as printed on the modem's label. I've read that a failed flash, or the proper test command can potentially wipe the NVM, or via a challenge/response:
AT!OPENLOCK?
The encryption key must be calculated based on the above challenge response, then entered via:
AT!OPENLOCK="xxxxxxxxxxxx"
AT!NVIMEIUNLOCK

For example, if the imei repair is 12345678901234+<check-digit + 0 padding>
The check-digit can be calculated using this LUHN calculator > https://planetcalc.com/2464/
So the repair command in this example with the calculated check digit 7 + 0 padding would be:
AT!NVENCRYPTIMEI=12,34,56,78,90,12,34,70

FYI. Changing imei in the US is illegal (there's a federal statute against it, and Big Bubba's waiting for ya in jail lol), however repairing it with the original imei should be ok, though it's a gray area. Just to be clear, the above is for information purposes only, I do not condone the use of it in any shape or form.

Thanks for your post. but how to calculate the encryption key-xxxxxxxxxxx? any tools?

[Didneywhorl]

The specific imei change commands cannot be posted on this site, but I think you will find what you need by searching for Daniel Woods SierraWirelessKeyGen on the interwebz

[Adm1jtg]

please ignore

[Earl_the_Pearl]

Getting into the locked area of the modem where things can be "repaired" is possible using
https://github.com/bkerler/edl. Using that group of programs I was able to unlock the engineer section where one can change things that are not available in the open area.

Using the programs one can unlock modems up to the M5's Snapdragon X55. Bkerler is working on newer modems, he will take requests. Don't let the code scare you off, I got most of it to run using the included scripts. It helps of one is familiar with Linux and Python; I was not familiar with ether and got it to run.

If you run into trouble search the Wide World of the Web and you will find the answers, I did.
I got this 4G speed using my "repaired" M5 on AT&T's iPad unlimited plan. This was after I used over 22 gig for the month too.

[joker88]

I need help with a Netgear Orbi LTE

[Didneywhorl]

I need help with a Netgear Orbi LTE

Head to this thread:
https://wirelessjoint.com/viewtopic.php?f=21&t=1876

[Sudoroyal]

everytime i try to repair my imei the sierra card powersdown and kills my serial connection to it.
how can i stop it from powering down?

[Didneywhorl]

I've never seen this. Either the card already has an inherent issue, or you are issuing a command to reboot it? OR your router has a watchdog feature that is rebooting the modem in an attempt to get online. You'll need to disable that annoying bit of software.

[Rich Hathaway]

everytime i try to repair my imei the sierra card powersdown and kills my serial connection to it.
how can i stop it from powering down?

This is the modem telling you that you are not privy to change this secure item the way you are trying to change it is tripping
the security fuze thus the reboot, in short you need to find another way to change it, be careful some fuzes have a counter that will put the modem into download mode loop if tripped enough times.