AT+CRSM clearing

IoT Modules LPWA Module
1

Hi,
I am using BG95-m3 module and hologram sim card. I want to clear the forbidden network and I used the following commands

AT+CRSM=176,28539,0,0,12
+CRSM: 144,0,“130184FFFFFFFFFFFFFFFFFF”

AT+CFUN=0
OK
AT+CRSM=214,28539,0,0,12,“FFFFFFFFFFFFFFFFFFFFFFFF”
+CME ERROR: 23
AT+CRSM=214,28539,0,0,12,“FFFFFFFFFFFFFFFFFFFFFFFF”
+CME ERROR: 23

Please suggest if I am missing anything. Your help highly appreciated.

Thanks
Shahzad

2

I have try it in my side ， it work fine ， pls check your character format

[2021-02-24_10:45:40:952]AT+CRSM=176,28539,0,0,12

[2021-02-24_10:45:40:952]+CRSM: 144,0,“64F00064F01064F02064F060”

[2021-02-24_10:45:40:952]OK
[2021-02-24_10:47:51:105]at+crsm=214,28539,0,0,12,“FFFFFFFFFFFFFFFFFFFFFFFF”

[2021-02-24_10:47:51:185]+CRSM: 144,0,""

[2021-02-24_10:47:51:185]OK
[2021-02-24_10:48:09:552]AT+CRSM=176,28539,0,0,12

[2021-02-24_10:48:09:552]+CRSM: 144,0,“FFFFFFFFFFFFFFFFFFFFFFFF”

3

Thanks it is working now.

4

Is it sufficient to set AT+CFUN=4 instead of CFUN=0 before clearing PLMN EFs?

5

With CFUN=0 no access to the SIM card is possible, with CFUN=4 this should be possible.
BUT: I would assume that CFUN=0,1 and then CFUN=4 does not initialize the SIM, and then deleting the PLMN would not be possible.

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