How to flash another unit by reading a binary from existing working unit?

[shreyab]

Hi, I am using SDK 15.1

My device is got hang during execution, namely in the function fds_init() - > while(!m_fds_initialized){..}

I wanted to reproduce this issue on another unit, so i used the following method -

• nrfjprog --readcode code.hex
• I used this code.hex and used nrfjprpg --program code.hex --sectorerase to program another unit
• when i tried to run this it got stuck at pm_init() saying that flash was not initialized.

just to be sure, I flash a brand new unit with a working binary of the same version and did the above procedure again, to my surprise even doing --readcode of working binary and then flashin it on a different unit gave me the same pm_init() FLASH STORAGE FULL error.

Any thoughts on this??

What is the correct way of getting a hex/binary from a unit and then flashin it on another unit to replicate it's flash memory and be able to replicate such errors ?

[Kenneth]

Hello,

I suggest you first run an nrfjprog --eraseall on the second chip, and I assume all hardware is identical. You may also want to duplicate uicr, by --readuicr file.hex

Best regards,
Kenneth

[shreyab]

if i have --uicr in one hex file and --readcode in another hex file, is it possible to flash them on the device? by merging or any such way?