L04 ABP LoraWan problems

[Alessandro Cortese]

Hi,
i'm working with L04 module for a LoraWan project but unfortunately i cannot make working ABP auth with TTN (using pybytes 1.20.2.r6).
I tried using 1.20.3.b4 version (development section from pycom firmware update tool) and everything works fine.

Any ideas?

regards,

Alessandro Cortese