Downlink timestamp error!

[brunoS]

Hello
I try the last firmware and the exemple of nano Lora gateway and TTN
https://github.com/pycom/pycom-libraries/tree/master/examples/lorawan-nano-gateway

It's OK for Uplink messages with ABP node.
But with Downlink message (APB node) and join reponse (OTAA), I have this error for every incomming UDP message on the gateway from TTN.
--> Downlink timestamp error!, t_us: 4294606989

Thanks

[dserrano]

I have exactly the same behavior you describe.
Downlink do not get messages.

Could you find a solution?