USB modem - Huawei E3372h-153/E3372s-153 (in StickMode; non-HiLink)
Firmware versions beginning with 21.xxx.xx.xx.xx NOT 22.xxx.xx.xx.xx
Router running OpenWRT; I use:
- GL.iNet AR750S firmware v3.022
- OpenWrt 18.06.1 r7258-5eb055306f / LuCI openwrt-18.06 branch (git-18.196.56128-9112198)