unable to flash the code in BT 40

[lalith88]

C:\Users\lnaik\Desktop\New_develop>nrfjprog --recover --coprocessor CP_NETWORK
Recovering device. This operation might take 30s.
[error] [ Client] - Encountered error -21: Command recover executed for 14 milliseconds with result -21
[error] [ Worker] - Eraseprotect is enabled and readback protection setting is ALL, can't recover device.
ERROR: Recover failed. Please make sure that the correct device family is given
ERROR: and try again.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed. 
i think this is the major issue  i am facing could not able to recovery the board 

and i am not able get the log details with --log 

i had created the before also one ticket related to this but it has closed with our resolving the issue 
i hope you will give quick replay 

[Susheel Nuguru]

Hmm, recover should have worked even if erase protection is enabled.

Can you try erase all and then try recover? 

> nrfjprog --eraseall --coprocessor CP_NETWORK

> nrfjprog --recover --coprocessor CP_NETWORK

[lalith88]

C:\Users\lnaik\Desktop\New_develop>nrfjprog --eraseall --coprocessor CP_NETWORK
[error] [ nRFXX] - Device does not have an ARM debug port.
[error] [ Client] - Encountered error -3: Command enable_coprocessor executed for 0 milliseconds with result -3
ERROR: NETWORK coprocessor is invalid on UNKNOWN family devices[error] [ nRFXX] - Device does not have an ARM debug port.

[error] [ Worker] - NETWORK is not a valid coprocessor for the device
ERROR: An invalid argument was provided. Use --help for a list of valid
ERROR: arguments.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed.

C:\Users\lnaik\Desktop\New_develop>nrfjprog --recover --coprocessor CP_NETWORK
[error] [ nRFXX] - Device does not have an ARM debug port.
[error] [ nRFXX] - Device does not have an ARM debug port.
[error] [ Client] - Encountered error -3: Command enable_coprocessor executed for 15 milliseconds with result -3
ERROR: NETWORK coprocessor is invalid on UNKNOWN family devices[error] [ Worker] - NETWORK is not a valid coprocessor for the device

ERROR: An invalid argument was provided. Use --help for a list of valid
ERROR: arguments.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed. can you check these out please