[Olimex BC66] - Random errors and no network attachment despite slow flashing NETLIGHT

brixton · January 17, 2022, 10:42am

when I use a NEW SIM card for the BC66, I get a CEREG message saying that ‘registration is denied’. See below. I’ve never seen a message like that before.
I have asked my SIM card provider about the SIM problem.
I have tried to capture logs by attaching a serial connection to the debug port of the BC66, and using QCOM software (1.6 version). However the output I get is scrambled. Any idea what could be going wrong here? I have seen “genie log” been recommended here and here as a debug tool, but I have no idea how to use that or where to get it from.

[2022-01-17_11:12:30:921]RRRRRó
[2022-01-17_11:12:31:151]+CPIN: READY
[2022-01-17_11:12:36:934]ATE1

[2022-01-17_11:12:36:934]OK
[2022-01-17_11:12:42:067]ATi

[2022-01-17_11:12:42:067]Quectel_Ltd
[2022-01-17_11:12:42:067]Quectel_BC66
[2022-01-17_11:12:42:067]Revision: BC66NBR01A10

[2022-01-17_11:12:42:067]OK
[2022-01-17_11:12:44:468]AT+CMEE=1

[2022-01-17_11:12:44:468]OK
[2022-01-17_11:12:47:104]AT+QSCLK=0

[2022-01-17_11:12:47:104]OK
[2022-01-17_11:12:48:146]AT+CIMI

[2022-01-17_11:12:48:146]901405340011497

[2022-01-17_11:12:48:146]OK
[2022-01-17_11:12:49:851]AT+CGMI

[2022-01-17_11:12:49:851]Quectel_Ltd
[2022-01-17_11:12:49:851]Quectel_BC66
[2022-01-17_11:12:49:851]Revision: MTK_2625

[2022-01-17_11:12:49:851]OK
[2022-01-17_11:12:51:100]AT+CGSN=1

[2022-01-17_11:12:51:100]+CGSN: 867997032558396

[2022-01-17_11:12:51:100]OK
[2022-01-17_11:12:54:120]AT+QBAND=1,8


[2022-01-17_11:12:54:120]OK
[2022-01-17_11:12:59:705]AT+QCGDEFCONT="IP","cdp.iot.t-mobile.nl"

[2022-01-17_11:12:59:705]OK
[2022-01-17_11:13:01:609]AT+COPS=1,2,"20416"
[2022-01-17_11:13:21:335]AT+QRST=1

[2022-01-17_11:13:21:335]+CME ERúRRRRRRóAT+QSCLK=0

[2022-01-17_11:13:27:374]OK
[2022-01-17_11:13:33:054]AT+CPSMS=0

[2022-01-17_11:13:33:054]OK
[2022-01-17_11:13:35:686]AT+CEREG=5

[2022-01-17_11:13:35:686]OK
[2022-01-17_11:13:40:757]AT+CEREG?

[2022-01-17_11:13:40:757]+CEREG: 5,3,,,,,0,19

[2022-01-17_11:13:40:757]OK
[2022-01-17_11:13:49:079]AT+CSQ

[2022-01-17_11:13:49:079]+CSQ: 11,0

[2022-01-17_11:13:49:079]OK
[2022-01-17_11:13:52:730]AT+CGATT=1

[2022-01-17_11:13:52:730]ERROR
[2022-01-17_11:13:56:912]AT+CGATT?

[2022-01-17_11:13:56:912]+CGATT: 0

[2022-01-17_11:13:56:912]OK
[2022-01-17_11:14:24:866]AT+CSCON?

[2022-01-17_11:14:24:866]+CSCON: 0,0

[2022-01-17_11:14:24:866]OK