How to protect chip from reflashing

[Konrad Traczyk]

Lets say, that I've got a chip with program in its flash. I know I can protect it from being read back, but can I protect it from flashing anything else through debugger interface? The thing I want to achieve is to disable the possibility of "program injection" which would steal the data.

[energy]

Hi, I search on the net and found out quickly how to dump the memory ! That's crazy Is this problem still in last revision nRF51822 chips ?

We don't need protection against reflashing but against dumping our code. We're thinking of stopping our production launch because of this problem. We can't affort cheap HW copy of our product with our software on them ...

Is the nRF52 better protected or also have such dramatic flaw ?

Thanks

[energy]

Done: devzone.nordicsemi.com/.../