Good evening, I am facing a weird issue. I have a ublox board, the C030 R412M, which includes the SARA R412M cellular modem. I have been using it with no problems, even though I was never able to connect to NB-IoT. However I downloaded another mbed studio programm that actually only worked with the GNSS module, and supposedly put the whole board to sleep and back to active again after a while.
After I was finished with the task that included this programm I switched back to trying to use the cellular modem but it seems like it is now dead. No response to any AT command, not even through ublox m-center.
Has anyone faced anything similar? I tried to make the PWR_ON low for a while as suggest in other threads to wake up the modem from deep sleep mode but to no avail. Does anyone know how I can make the modem active again? Or in the worst case scenario how can I be 100% sure that I have damaged the modem beyond repair somehow?
Thanks in advance