Problem with Beacon Demo app

[Yaron]

Hi all! I am using the nRF51 DK and I am trying to use the elements demo APPs that Nordic provide - the Beacon app. after the downloading of the app and watching it working (Led 1 is blinking and through the android-nordic app I can see the device, the next step is to change the id using - "USE_UICR_FOR_MAJ_MIN_VALUES" I used the nrfjprog tool to change the ID at adress 0x10001080 and even rechecked with nrfjprog memrd to the same adress that I actually wrote the new info as ordered in nordic site infocenter.nordicsemi.com/index.jsp - The problem is I can not see the data changing in to it. it is as it was at the beginning. any ideas? many thanks..

[Hung Bui]

@Yaron: It's not possible to re-write any data in flash, you need to erase the page first. And for UICR the only way to erase it is to erase the whole chip. Please have a look here.