No_free_ch problem with SODAQ explorer

I have been working through the Semtech LoRaWAN Academy course, for which a SODAQ Explorer board is used. At the point where I need to do OTAA registration with the Things Network, I get the following repeated error message:

Sending: mac join otaa
Response is not OK: no_free_channel

I have done a search and found various explanations of why this might be happening. For example:

  • the firmware is corrupt: “It looks like the no_free_ch problem is triggered when the duty cycle is somehow set to zero”
  • the board needs a factory reset ( sys factoryRESET )

It’s a brand new board, so I am a bit disappointed that I am having this problem. Does anybody have any idea of how to fix this issue?

Hi @quantum-billy,

You can use the firmware update tool to update/reset the RN firmware.
The tool is for both RN2903 and RN2483.

Let me know if this solves your issue.

Best regards,
Jan