LTE module

Hello. I am having troubles with SXT LTE kit LTE module. The kit came with built in module, haven’t done any modifications. After OS upgrade to 7.3.1 the LTE module is missing. Prior the upgrade it was there, I was able to use it and connect to the internet.

/system/resource/usb> print0
1-0 Linux 5.6.3 ehci_hcd RB400 EHCI 4801
1-1 LG ELECTRONICS LEO Platform USB 12

While running print in USB, I can see two modules. The thing is the second module comes up and after few seconds it is missing, then once again it comes up and is missing. How to solve this problem?

Did you upgrade the firmware too or only the ROS ?

Both. I found out the reason, why it is missing, turns out the module has been discontinued and does not work with the latest firmware.

Is this an SXTLTE3-7?