Using nrfjprog --recovery to unlock the network core for programming

[Pret]

Hi

Having the nRF5340DK board and following few examples from the nRD SDK Connect. After programming the application core, need to program the network core using the hci_rpmsg

When trying to program the network core, it denies being locked, so I realize I need to use the following command to unlock the core prior its programming:

nrfjprog --recover --coprocessor --CP_NETWORK

IN what directory in Promt shall I be to do that ? Because being in general one (C:\Users\"Username") it reports invalid argument

Thank you

Alex

[Vidar Berg]

Hi Alex,

It shouldn't matter what directory you invoke nrfjprog from. The problem is probably that you have the hyphens ('--') in front of CP_NETWORK. The correct command is :

nrfjprog --recover --coprocessor CP_NETWORK

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_nrf5340.html#readback-protection 

Best regards,

Vidar