Hello @Martynas
- I might have done a little mistake with the update. So I wanted to check if the internal modem firmware is up to date.
Earlier I found this old guide and managed to complete the update with it. However, after the update I realized that the modem firmware file in that guide was most likely outdated. Here is link to that guide: 
- I haven’t noticed any mobile connectivity issues with current modem firmware.
 
Sorry for this hassle.
