nRF52 DK segger (PCA10036) not giving option to lock the application code

[Rahul Sahu]

I am using nRF51822 (PTR5518A) with SDK v12 and s130 softdevice. To dump the code I am using nRF52 DK segger (PCA10036). With that I am able to dump the code but there is no option to lock it. I don't have any other segger board to dump the code. Is there any way to enable code locking facility in nRF52 DK segger board ? Or can I enable it through code?

[endnode]

This looks like misunderstanding. Every nRF5x chip you can "lock" against read-back and debugger access. This is what most of the people do once they are done with development and go to production. The only way to bypass it is either hack it (there unfortunately is vulnerability on nRF51 which allows some tricks) or erase the chip completely which will "unlock" it.

Then you say you have PCA10036 but you don't have other SEGGER board. Why would you need it? "Lock" in nrfjprog or nRFgo Studio is of course linked to the nRF5x target chip not to SEGGER J-Link OB fw (that is kind of locked by itself, you can only bootload it and update with other FW image from SEGGER or Nordic...)

[Rahul Sahu]

PCA10036 is on the nRF52 Development board. Using that I am trying to dump the code in my custom board which is having nrf51822 (PTR5518A). Not using any separate segger board for that. With the PCA10036 there is no problem in dumping the code. But the checkbox provided where we can enable or disable the lock is by default disabled and there is no way I can change it.