nrfjprog read back protection is working??

[sosse]

Hello, after I program bootloader, sd, application, I did the following command to do read back protection,

nrfjprog --rbp ALL -f NRF51

But, even though I still can get data by using nrfjprog --memrd xxxxx. Can anybody tell me how can I protect to somebody to read my chip?? Thank you.

[endnode]

UICR register is reloaded during nRF5x reset, have you powered the chip off and on (or issued reset command)?

[endnode]

This works for me (getting error on last memrd), not sure what you do wrong:

set MERGE_NAME=merged.hex
set SOFTDEVICE_NAME=s130_nrf51_2.0.1_softdevice.hex
set NRF5_CHIP_FAMILY=NRF51
set APP_NAME=my-ble-app.hex

echo Programming ...
echo NRF5_CHIP_FAMILY = %NRF5_CHIP_FAMILY%
echo SOFTDEVICE_NAME  = %SOFTDEVICE_NAME%
echo APP_NAME         = %APP_NAME%

mergehex -m %SOFTDEVICE_NAME% %APP_NAME% -o %MERGE_NAME%
nrfjprog --recover -f %NRF5_CHIP_FAMILY%
nrfjprog --memrd 0x0000300C -f %NRF5_CHIP_FAMILY%
nrfjprog --program %MERGE_NAME% --verify --chiperase -f %NRF5_CHIP_FAMILY%
nrfjprog --memrd 0x0000300C -f %NRF5_CHIP_FAMILY%
nrfjprog --rbp ALL -f %NRF5_CHIP_FAMILY%
nrfjprog --memrd 0x0000300C -f %NRF5_CHIP_FAMILY%
nrfjprog -p -f %NRF5_CHIP_FAMILY%
nrfjprog --memrd 0x0000300C -f %NRF5_CHIP_FAMILY%