TP-Link MR200 LTE router - Modem resets after restart

Installing and Using OpenWrt
1

Hi,
I've installed LEDE on a TP-Link MR200 LTE Router following https://openwrt.org/toh/tp-link/archer-mr200.
Everything works perfectly fine, expect one thing. After a restart the modem (not router) settings - accessible through 192.168.225.1/settings.html are reset.

I would appreciate any advice on how to make my modem/provider settings (especially the apn) permanent.

Thank you!
Rob

2

OK, so the router keeps its settings, just the modem configuration?

How are you configuring the modem? Which packages did you install to support it?

3

Thanks, jeff. Yes, correct. The router is fine, only the modem is losing its settings.
I'm configuring the modem via the web interface at 192.168.225.1/settings.html. I would prefer to do this via a config file or script but could not find one.
I've only installed the default packages that come with LEDE, no additional ones.

4

https://openwrt.org/docs/guide-user/network/wan/wwan/ltedongle may be helpful, if you haven't already seen it.