UC20-GD Latest Friwmare

Hi, We are using the UC20-GD module as our GNSS module but it loses network connections sometimes and it is the firmware: UC20GQDR03A19E1G I would like to ask anyone if they have the same problem or not because when I check APN settings it is correct and it is connected to a Linux device.

Does someone have a newer firmware and can someone explain to me what are the differences between firmware?

Note: When it loses connection it needs a power reboot which I cut the power entirely and wait 30 sec then boot it again then it will become online sometimes even that is not enough then I have to power off take out my sim card wait a bit then put sim card back and boot it.

Kind Regards