E3372h-320 to serial mode (NCM)

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello,
i'm trying to do a router with a raspberry and E3372h-320.
HiLink mode works correctly, but i'd like to use serial mode.
I try:

  1. creating /etc/modprobe.d/huawei-noprobe.conf file with:
    "E3372h-320 - switching works sometimes - USB_ModeSwitch"
  2. edited usb-mode.json

{
        "messages" : [
                "55534243123456780000000000000011063000000100010000000000000000",
        ],
        "devices" : {
                "12d1:1f01": {
                        "*": {
                                "t_vendor": 4817,
                                "t_product": [ 5471 ],
                                "msg": [ 0 ]
                        }
                }
        }
}

nevertheless, doesn't works.
Looks like working correctly, but devices goes in loop boot (connect and disconnect)

[  732.852632] usb 1-1.2: new high-speed USB device number 79 using dwc_otg
[  733.004206] usb 1-1.2: New USB device found, idVendor=12d1, idProduct=155e, bcdDevice= 1.02
[  733.018623] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  733.029048] usb 1-1.2: Product: HUAWEI_MOBILE
[  733.036440] usb 1-1.2: Manufacturer: HUAWEI_MOBILE
[  733.134890] option 1-1.2:1.0: GSM modem (1-port) converter detected
[  733.144769] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[  733.155806] option 1-1.2:1.1: GSM modem (1-port) converter detected
[  733.165766] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB1
[  733.176638] option 1-1.2:1.2: GSM modem (1-port) converter detected
[  733.186482] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB2
[  733.373732] cdc_ncm 1-1.2:1.3: MAC-Address: 00:1e:10:1f:00:00
[  733.382565] cdc_ncm 1-1.2:1.3: setting rx_max = 16384
[  733.425785] cdc_ncm 1-1.2:1.3 wwan0: register 'cdc_ncm' at usb-20980000.usb-1.2, Mobile Broadband Network Device, 00:1e:10:1f:00:00
[  735.354021] usb 1-1.2: USB disconnect, device number 79
[  735.363140] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[  735.377285] option 1-1.2:1.0: device disconnected
[  735.385871] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[  735.400026] option 1-1.2:1.1: device disconnected
[  735.408625] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[  735.422815] option 1-1.2:1.2: device disconnected
[  735.431038] cdc_ncm 1-1.2:1.3 wwan0: unregister 'cdc_ncm' usb-20980000.usb-1.2, Mobile Broadband Network Device
[  751.012724] usb 1-1.2: new high-speed USB device number 80 using dwc_otg
[  751.154142] usb 1-1.2: New USB device found, idVendor=12d1, idProduct=1f01, bcdDevice= 1.02
[  751.168599] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  751.179096] usb 1-1.2: Product: HUAWEI_MOBILE
[  751.186583] usb 1-1.2: Manufacturer: HUAWEI_MOBILE
[  751.194450] usb 1-1.2: SerialNumber: 0123456789ABCDEF
[  751.230005] usb-storage 1-1.2:1.0: USB Mass Storage device detected
[  751.253189] scsi host0: usb-storage 1-1.2:1.0
[  751.742862] usb 1-1.2: USB disconnect, device number 80