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RM502Q-AE updated firmware, IMEI no longer matches
Posted: Wed Oct 05, 2022 7:51 am
by jacksonville
I used QFirehose to update the firmware on a RM502Q-AE from RM502QAEAAR11A04M4G_01.002.01.002 to RM502QAEAAR11A04M4G_01.004.01.004. After that it would no longer connect and I noticed it no longer has the same IMEI that's printed on the card. How do I restore the original IMEI?
Re: RM502Q-AE updated firmware, IMEI no longer matches
Posted: Thu Oct 06, 2022 5:14 am
by Didneywhorl
This is a first.
Search the full function of the Quectel AT command:
AT+EGMR
You're specifically interested in the =1,7,"123456789012345" part of the command.
Re: RM502Q-AE updated firmware, IMEI no longer matches
Posted: Thu Oct 06, 2022 5:42 pm
by jacksonville
I tried it and the IMEI did change however the modem still won't connect. I replaced the modem with a different working module for the time being.
I think I remember modem manager saying it was in "factory-test" mode. Is there such a mode and how can I avoid it?
Re: RM502Q-AE updated firmware, IMEI no longer matches
Posted: Thu Oct 06, 2022 6:10 pm
by Didneywhorl
Never seen such a mode myself.