AT+SN=? returns garbage

Hello Team,
When i ran AT+SN=? i get ??? is this normal?


I got the same problem and RAK TEAM Cant help me .
seems like my RAK3272S is get erased some how …

Hi @JayjJay ,

I am sorry to miss to reply on this. I suspect that the SN wasn’t written. There is a special AT command that can write SN but we do not share it in public.

It shows as well that you are using v1.0.4, I suggest you update the firmware to RUI3.

Hi @rami ,

I just replied on your issue on your own forum topic :+1: