Make sure to check which firmware version the module you got is using. The module I ordered last year still uses an old firmware from 2020 which has telnet acc

Make sure to check which firmware version the module you got is using. The module I ordered last year still uses an old firmware from 2020 which has telnet access available. The module I ordered a few weeks ago uses a new firmware with no telnet access, which also means no way to set the serial number anymore. I haven't yet checked whether it's still possible to access the interface via uart.