Rak3172 firmware upgrade timeout!

I want to see the send data, receive data.
but i enter the binary mode AT command while searching for document,
Don`t write the debug mode AT command and displays the Firmware Upgrade timeout.
try all board-rate or reset.

If you enabled binary mode, you need to switch back to AT command mode before you can update the device.

Sending AT+ATM should work, even if you are in binary mode. Please have a look into Switching Serial Operating Mode

Follow this thread. I finally let me talk to the RAK3172. Just need to upload this firmware on this link.