ZLT X28 Quectel RG500L-EU MTK750 AT Command does fix but problem exists
Posted: Thu Jun 20, 2024 8:15 pm
I got this router ZLT x28 , Inserted the sim it shows apn, but no signal , after doing some research got to know the router product Imei does not matches the router Dashboard , Admin panel has (At command) is accessible, the module in this is quectel RG500L-eu , so I given AT command
AT+EGMR=1,7,"Orignal Imei"
response Ok
confirmed by AT+CGSN response shows orignal imei
Rebooted the device
Saw signals lights! looks fixed , connected to internet its working
, But firmware admin panel shows the same wrong imei then looked also with At command , AT+CGSN response shows same wrong imei but signals and internet works!! , So to make sure did (2nd)reboot then it not worked no signal , 
So the problem now is that if router turns off or do reboot again it goes back to same wrong imei and then sim doesn't work (no signal)
I have to give At command with original Imei to make it work every time i turn it back on
So whats happening here?? any ideas ? need fix
any little help Highly appreciated!!
AT+EGMR=1,7,"Orignal Imei"
response Ok
confirmed by AT+CGSN response shows orignal imei
Rebooted the device
Saw signals lights! looks fixed , connected to internet its working
, But firmware admin panel shows the same wrong imei then looked also with At command , AT+CGSN response shows same wrong imei but signals and internet works!! , So to make sure did (2nd)reboot then it not worked no signal , So the problem now is that if router turns off or do reboot again it goes back to same wrong imei and then sim doesn't work (no signal)
I have to give At command with original Imei to make it work every time i turn it back on
So whats happening here?? any ideas ? need fix
any little help Highly appreciated!!