Hi from Germany,
same issue here.
Some annotations:
- Of course modem firmware RG520NEBDCR03A05M4G
- Downgrading the "RUTX-” firmware did not fix the issue
- Upgrading the "RUTX-” firmware did not fix the issue
- The issue started with upgrade to 7.22 (do the 7.22 upgrade includes a modem-firmware-update?)
- Issue is persisent to “data-reset” during the downgrade
- Changing the SIM slot did not fix the issue
- Removing the SIM-PIN causes other “error messages”