@Xykon , it is now the second time you save my day :)) Successfully updated! You can mark this as solved! Just wanted to point that the command tool didn't work this time, but the python did. Anyway, next step try to connect it to my LoRa AP! Thank you for your help. Regards, (I was using a expansion board)

@les-a If you stay away from atom+pymakr and stick with putty and ftp tranfer, you'll save yourself a lot of trouble.