Huawei E3372h and Zyxel NBG6616 problems

i have one Zyxel NBG6616 ( r5117-fbde9ac) and one usb modem E3372h-153 4G dongle.
I'm trying to install the modem on this router. But it doesn't work.
I tryied all kind of guides on internet, without results.

For example:
or w i k i or

opkg update && opkg install kmod-usb-net-cdc-ether usb-modeswitch

How can i do?

are you done with using e3372 to openwrt?
if done, can you guide me how to do it?