How do I safely perform the factory reset of the EM7455 modem?

IoT Modules MC/EM Series
1

How do I safely perform the factory reset of the EM7455 modem?

I have tried “AT!RMARESET”, but the modem does not register to the network after performing the “AT!RMARESET”.

2

have you checked the following?

AT!ENTERCND="A710"
ATi3
at+cgdcont?
AT+CFUN?
AT+Cpin?
AT!IMPREF?
at!gstatus?
AT!selrat?
at!BAND?
4

Enter AT command: AT!ENTERCND=“A710”
AT!ENTERCND=“A710”
OK

Enter AT command: ATi3
ATi3
Manufacturer: Sierra Wireless, Incorporated
Model: EM7430
Revision: SWI9X30C_02.38.00.00 rE3F3E55C03AE94 jenkins 2022/01/13 05:16:00
MEID: 35907506884593
IMEI: 359075068845931
IMEI SV: 22
FSN: LR949674800210
+GCAP: +CGSM

OK

Enter AT command: AT+CGDCONT?
AT+CGDCONT?
+CGDCONT: 1,“IPV4V6”,“airtelgprs.com”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0

OK

Enter AT command: AT+CFUN?
AT+CFUN?
+CFUN: 0

OK

Enter AT command: AT+CPIN?
AT+CPIN?
+CPIN: READY

OK

Enter AT command: AT!IMPREF?
AT!IMPREF?
!IMPREF:
preferred fw version: 02.38.00.00
preferred carrier name: GENERIC
preferred config name: GENERIC_002.082_000
preferred subpri index: 000
current fw version: 02.38.00.00
current carrier name: GENERIC
current config name: GENERIC_002.018_000
current subpri index: 000

config name mismatch

OK

5

Enter AT command: AT!BAND?
AT!BAND?
Index, Name, GW Band Mask L Band Mask TDS Band Mask
00, All bands, 100600000C400000 000001E0081600D5 0000000000000020

OK

6

This is EM7430 (APAC equivalent of EM7455)

7

“config name mismatch”
You need to redownload the firmware+carrier pri

8

How do I redownload the firmware+carrier pri from Linux?

9

There is fwdwl application in mbpl