@bruce I backed up all previous logs locally for a reference if needed and downgraded to openwrt-e750-4.3.26-release10326-0408-1744078505.tar with out Keeping Settings. After successful downgrade, I still see the same No Service and same message under Cellular
- Next, I attempted
Manual Setup Here is a default screen with default APN which I did replaced it to broadband (not in the screenshot) and Applied. Still No Service
- I am attaching the debug code from Modem Management after changing to
broadband which should be correct. I replaced IEMI number in json file with XXX and YYY.
{
"msgs": [
{
"cmd": "AT",
"result": "\r\nOK\r\n"
},
{
"cmd": "ATI",
"result": "\r\nQuectel\r\nEM060K-GL\r\nRevision: EM060KGLAAR01A11M2G\r\n\r\nOK\r\n"
},
{
"cmd": "AT+GMI",
"result": "\r\nQuectel\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CIMI",
"result": "\r\nYYYYYYYYYYYYYYY\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CPIN?",
"result": "\r\n+CPIN: READY\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CREG",
"result": "\r\nOK\r\n"
},
{
"cmd": "AT+CSQ",
"result": "\r\n+CSQ: 99,99\r\n\r\nOK\r\n"
},
{
"cmd": "AT+GSN",
"result": "\r\nXXXXXXXXXXXXXXX\r\n\r\nOK\r\n"
},
{
"cmd": "AT+COPS?",
"result": "\r\n+COPS: 0\r\n\r\nOK\r\n"
},
{
"cmd": "AT+QCFG=\"nwscanmode\"",
"result": "\r\nERROR\r\n"
},
{
"cmd": "AT+QCFG=\"band\"",
"result": "\r\nERROR\r\n"
},
{
"cmd": "AT+QCAINFO",
"result": "\r\nOK\r\n"
},
{
"cmd": "AT+CEREG?",
"result": "\r\n+CEREG: 0,2\r\n\r\nOK\r\n"
}
]
}
Here are additional AT commands I did tried for a reference
AT+CREG?
+CREG: 0,2
OK
AT+CEREG?
+CEREG: 0,2
OK
AT+CSQ
+CSQ: 99,99
OK
AT+COPS?
+COPS: 0
OK
AT+CPIN?
+CPIN: READY
OK
AT+QENG="servingcell"
+QENG: "servingcell","SEARCH"
OK
AT+QCFG="BAND"
ERROR
AT+CGDCONT?
+CGDCONT: 1,"IPV4V6","tfdata","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 2,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 3,"IPV4V6","SOS","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1
OK
AT+CGDCONT=1,"IP","broadband"
OK
AT+CGACT?
+CGACT: 1,0
+CGACT: 2,0
+CGACT: 3,0
OK
AT+CGACT?
AT+QCFG="nwscanmode"?
ERROR
AT+QCFG="band"?
ERROR
Now, this is interesting, while I was running above commands, when I was done, I out of curiosity looked @ Mudi display, and I see AT&T and looks like it is connected!
Not sure if one of the commands did "trigger" something, or the Mudi had to be online for some time for the information to populate. Any suggestions. I will try to cold boot and see it it will come on line.
And here is the debug json while it is on
{
"msgs": [
{
"cmd": "AT",
"result": "\r\nOK\r\n"
},
{
"cmd": "ATI",
"result": "\r\nQuectel\r\nEM060K-GL\r\nRevision: EM060KGLAAR01A11M2G\r\n\r\nOK\r\n"
},
{
"cmd": "AT+GMI",
"result": "\r\nQuectel\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CIMI",
"result": "\r\nYYYYYYYYYYYYYYY\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CPIN?",
"result": "\r\n+CPIN: READY\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CREG",
"result": "\r\nOK\r\n"
},
{
"cmd": "AT+CSQ",
"result": "\r\n+CSQ: 24,99\r\n\r\nOK\r\n"
},
{
"cmd": "AT+GSN",
"result": "\r\nXXXXXXXXXXXXXXX\r\n\r\nOK\r\n"
},
{
"cmd": "AT+COPS?",
"result": "\r\n+COPS: 0,0,\"AT&T\",7\r\n\r\nOK\r\n"
},
{
"cmd": "AT+QCFG=\"nwscanmode\"",
"result": "\r\nERROR\r\n"
},
{
"cmd": "AT+QCFG=\"band\"",
"result": "\r\nERROR\r\n"
},
{
"cmd": "AT+QCAINFO",
"result": "\r\n+QCAINFO: \"PCC\",700,100,\"LTE BAND 2\",1,153,-97,-9,-67,9\r\n+QCAINFO: \"SCC\",5330,50,\"LTE BAND 14\",1,153,-85,-9,-66,10\r\n\r\nOK\r\n"
},
{
"cmd": "AT+CEREG?",
"result": "\r\n+CEREG: 0,1\r\n\r\nOK\r\n"
}
]
}
sam for Security. Searching 
