When i am uploading the firmware by modifying the github source code and uploading the updated firmware into the 3DR telemetry module, I am getting error like Failed to enter the command mode in Mission Planner. If i want to upload the firmware, getting the error message like couldn’t put into the bootloader mode. How to resolve this issue? Can anyone help me in this?
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Have tried these steps SiK Radio — Advanced Configuration — Copter documentation to force bootloader mode?