https://devzone.nordicsemi.com/f/nordic-q-a/68586/nrf9160-writing-to-flash-at-a-specified-location-using-nrfjprog-command-line-utilityHi, We have a requirement where we need to store some application parameters (Eg. APN name ) in the nrf9160 flash. This parameters will be storing during production time by using the nrfjprog command line utility. Our requirement is we need to writeen-USTelligent Community 13Fri, 20 Nov 2020 13:31:45 GMThttps://devzone.nordicsemi.com/thread/281117?ContentTypeID=1Fri, 20 Nov 2020 13:31:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aaa0c297-cf5a-42fb-b008-39410594d87dIvan Herrera<p>Correct. The programmer will only write in that location and leave the other flash untouched. It does not erase anything unless you specifically tell it to do so.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/281112?ContentTypeID=1Fri, 20 Nov 2020 13:19:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9737fc32-9652-4a73-b670-323d320fde2dAswin P V<p>oh okay. The program command will only write in those location? Does it erase the other portion of flash?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/281062?ContentTypeID=1Fri, 20 Nov 2020 10:04:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5bb428a3-42cf-4cd0-a538-11263adf58d1Ivan Herrera<p>An intel hex file (.hex) already contains data on the off-set (start-address) the data needs to be written to.&nbsp;</p> <p><a href="https://en.wikipedia.org/wiki/Intel_HEX#Format">https://en.wikipedia.org/wiki/Intel_HEX#Format</a></p> <p>If you properly encode your hex file, you should just be able to program it using nrfjprog --program into place.&nbsp;</p><div style="clear:both;"></div>