secure bootloader example is not working

[saurabh]

i used nrf52832 and sdk 14_02 i run this example secure bootloader located in example>dfu folder is get error 

return NRF_ERROR_INTERNAL;

on nrf_bootloader_init() this function can you please help me to solve this problem 

thanks

[Hung Bui]

Hi Saurabh, 

Could you let us know how did you test the bootloader ? What did you flash on the chip ?
Please make sure you erase the chip before you flash the softdevice and the bootloader. 

Could you attach the whole log ? 
Have you tried to test with the debug version and step into the nrf_bootloader_init() code ? 

[saurabh]

first i change the public key. c file using nrfuyil.exe and then generate make  ( .a ) file and erase all and flash using segger studio but i not see DfuTrag on my app

[Hung Bui]

Could you let us know which hardware board you use ? 
Have you tried to test on a dev kit ? 

Please try to test using the debug bootloader and try to step into the code. Please make sure you flashed the softdevice.