# 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.