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generic MC7455 won't connect to network

Posted: Tue Nov 30, 2021 3:24 pm
by matrx10503
Ok, have a mc7455 that was out of a BEC technologies LTE router. Generic firmware.
I've updated the card to latest f/w.
The card works in QMI mode in the BEC router fine (mbim it will not)

Put mc7455 in my rooter router and changed to mbim mode:
at!gstatus?
!GSTATUS:
Current Time: 112 Temperature: 34
Reset Counter: 2 Mode: ONLINE
System mode: LTE PS state: Not attached
LTE band: B4 LTE bw: 20 MHz
LTE Rx chan: 2300 LTE Tx chan: 20300
LTE CA state: NOT ASSIGNED
EMM state: Deregistered PLMN Search
RRC state: RRC Idle
IMS reg state: No Srv

PCC RxM RSSI: -86 RSRP (dBm): -116
PCC RxD RSSI: -85 RSRP (dBm): -115
Tx Power: -- TAC: 82F4 (33524)
RSRQ (dB): -10.0 Cell ID: 011A3302 (18494210)
SINR (dB): 10.4


OK

Sim card and imei shows up fine. I put a EC25-AF (both qmi and mbim mode) in and it connects within 30 seconds.

Re: generic MC7455 won't connect to network

Posted: Sun Dec 05, 2021 5:01 pm
by packlet
Is the SIM/plan tied to a specific IMEI, perhaps?

Re: generic MC7455 won't connect to network

Posted: Sun Dec 05, 2021 6:12 pm
by matrx10503
I put another carrier sim and it worked, then I swapped the tmo back in and was working this time. So i'm not exactly sure what ended up getting it to work.