# Huawei E3372h-320 modem

Tested on FW `11.0.1.1(H697SP1C983)`\
\
Install packages:
```
kmod-usb-net-cdc-ncm
kmod-usb-serial-option
usb-modeswitch
```

Use usb-modeswitch to switch to NCM mode.\
You need to add a new message and change the device entry of 12d1:1f01.\
Thanks to to user `woec` at OpenWrt forum who provided the informtion, https://forum.openwrt.org/t/huawei-e3372h-320-in-ncm-mode/126018/12

Add message `"55534243123456780000000000000011063000000000010000000000000000"` at the end of the message block, in the begining of `/etc/usb-mode.json`, and modify device entry 12d1:1f01 to:
```
        "12d1:1f01": {
                "*": {
                        "t_vendor": 4817,
                        "t_product": [ 5339, 5340 ],
                        "mode": "HuaweiAlt",
                        "msg": [ xx ]
                }
        }
```
Where xx is the message entry of the newly added message. Verify with `jsonfilter -i /etc/usb-mode.json -e '@["messages"][xx]'`. In my case xx = 61.