AT port not attacted with RM520N-GL

[Aleksander Morgado]

>
> Thanks for your reply, I will try out the suggested methods.
> And another thing is we are planning to update ModemManager
> ,currently we are at 1.16.6-2) and we can go to 1.20 stable versions.
> Is there any stable version that you can push into ModemManager sources?
> https://www.freedesktop.org/software/ModemManager/
>

Please use the signed git tags to retrieve the stable versions, we
stopped publishing tarballs some time ago.

-- 
Aleksander