@bioshock2k By default, MCCI LMIC is for US915. So when you changed the region on lmic_project_config.h and the Endianess of your EUIs, it instantly work?
I am still on the same situation of Unknown event: 20. I tried TTN V2, V3 and Chirpstack.
I got all the same situion: join request is received by the Network Server then join accept is sent by the Network Server, but it seems it never got accepted by the device
@nmcc I think this is related to the STM32duino on MCCI LMIC, timing issues, etc. I’ve used ATMEL (arduino) chips with bare SX1276 couple of times before and I am not having issues with it. STM32duino has proper BSP for RAK811 so the pin mapping are handled by default. Still I do not know what I am missing