EP06-E LTE cannt manually register network

IoT Modules LTE-A Module
1

Dear Support Team,

I have a modem EP06-E my modem always registers auto to the wrong provider. when I want to switch manual register to my provider my modem EP06-E always rejects

1). List Operator , my operator TSEL

                {
                        "mcc": 510,
                        "mnc": 10,
                        "description": "T-SEL",
                        "status": [
                                "available",
                                "home",
                                "not_forbidden",
                                "preferred"
                        ]
                },
                {
                        "mcc": 510,
                        "mnc": 10,
                        "description": "T-SEL",
                        "status": [
                                "available",
                                "home",
                                "not_forbidden",
                                "preferred"
                        ]
                },
                {
                        "mcc": 510,
                        "mnc": 89,
                        "description": "3",
                        "status": [
                                "current_serving",
                                "roaming",
                                "forbidden",
                                "not_preferred"
                        ]
                }```

2). Log Status Signal dan Status Regist 
```root@PKI_MODEM:~# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
        "type": "lte",
        "rssi": -65,
        "rsrq": -10,
        "rsrp": -94,
        "snr": 126
}
root@PKI_MODEM:~# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
        "type": "lte",
        "rssi": -65,
        "rsrq": -10,
        "rsrp": -94,
        "snr": 80
}
root@PKI_MODEM:~# uqmi -d /dev/cdc-wdm0 --get-serving-system
{
        "registration": "registering_denied",
        "plmn_mcc": 510,
        "plmn_mnc": 89,
        "plmn_description": "",
        "roaming": true
}
root@PKI_MODEM:~# uqmi -d /dev/cdc-wdm0 --set-plmn --mcc 510 --mnc 10
root@PKI_MODEM:~# uqmi -d /dev/cdc-wdm0 --get-serving-system
{
        "registration": "registering_denied",
        "plmn_mcc": 510,
        "plmn_mnc": 89,
        "plmn_description": "",
        "roaming": true
}```
2

Hi,
Thanks for your query in quectel forums.
The SIM card of the corresponding operator can be used on the premise that the module supports the operator’s network.
Thanks.

3

Requesting an EP06-E modem to register its multi-sim with a specified network operator is disregarded in favour of another.

Example scenario:

mmcli -m 0 --3gpp-register-in-operator 23410

This will very rarely, be fulfilled. Instead it will register with 23420

Presumably, this is down to the modem firmware overriding the request with what it thinks is preferential.
Is this the same behaviour/logic used in determining what the ‘home network’ is? (mmcli -m 0 --3gpp-register-home)

This is very consistently witnessed behaviour.

Can anyone please shed any light on what is at play here? Any logic involved in this decision or even a way to gain control over directing registration.