I’m currently experimenting with the Quectel EG915U-EU module. The voice functions have been working flawlessly for some time. Connecting to the provider’s network also works well. It only takes a few seconds to detect the home zone. After several attempts to establish a socket connection, the module no longer detects a home zone. Even a power cycle doesn’t help.
A different, new module works perfectly. But after several attempts to establish an internet connection, the same problem occurs. I suspect an invalid setting in the module’s NV-RAM area.
Is there a command to reset the module to factory settings? (<AT&F0> doesn’t work). The module has firmware version EG915UEUABR03A01M08. Could someone please send me the following: The latest available firmware for the EG915U-EU module. Which program do I need for the update? The procedure for updating the firmware?