Hello,
I was not able to replicate your issue, the device responded to SMS after update via message.
Since you have a local RUT240 for testing, could you login to router via SSH, execute logread -f command and see, if any messages are generated regarding the event in the terminal?
Unfortunately, modem module firmware update is not possible over SMS and the procedure requires a secondary internet source, either wired or wireless.
SMS not working may be due to the gap between firmware releases and possible migration issues.
I would like you to check locally, whether a device reset to factory default settings (login to the WebUI, navigate to System -> Backup -> Restore default settings) does solve the issue and SMS are received?
Otherwise, it would be helpful if you could provide a couple of troubleshoot files from your device:
- One with firmware 7.02.7, generated after sending a couple of SMS to the router.
- Another, after update via SMS to 7.03.3, also generated after sending a couple of SMS to the router.
To generate the file, access router's WebUI, go to System -> Administration -> Troubleshoot section and download troubleshoot file from there. The logs in the file might provide more insight into the issue. Generated files can be attached by editing your original question.
Best regards,