I am previously working on RAK811 v2.x.x.x, and now I am working on v3.x.x.x. I understand that the at commands have changed. There is one thing I just want to clarify, if I failed on joining through OTAA on v2.x.x.x, the serial port tool would reply at+recv=6,0,0 however in v3.x.x.x the serial port will reply[LoRa]:Joined Failed!. My question is, is “at+recv=6,0,0” and "[LoRa]:Joined Failed just the same? Or is "[LoRa]:Joined Failed just define as “at+recv=6,0,0”? "I need to know this as I am communicating arduino and RAK811, and this message of failure is vital in letting arduino know that the join is failed.