Hi,
I ported the SBSFU project to the LoRaWAN_AT_Slave routine, and tested DFU normally and it worked fine, but when I used the wrong file to upgrade, such as readme.txt, the upgrade process ran for a while, and then stopped, showed " Fw header authentication error" and "No valid FW found in the active slots nor new FW to be installed". As a result, the firmware of my application cannot run normally, and I must re-DFU the normal firmware before I can restore it. Is this normal?
