1. install usb, serial and mbim modules according to this receipe https://openwrt.org/docs/guide-user/network/wan/wwan/ltedongle
2. unpack mbim.zip
3. Copy and replace /lib/netifd/proto/mbim.sh with the one from the zip
check permissionss, must be executable
4. Copy luci-proto-mbim_1.0-1_mipsel ...
