https://devzone.nordicsemi.com/f/nordic-q-a/48051/cant-access-flash-memory-after-otahi i am using nrf51882 with sdk v 12.2.0. i am trying to use flash memory to store some data for my application. I am accessing flash after initialization. When i run code without bootloader then flash read write works fine but when i load bootloaderen-USTelligent Community 13Sat, 29 Jun 2019 07:40:01 GMThttps://devzone.nordicsemi.com/thread/195445?ContentTypeID=1Sat, 29 Jun 2019 07:40:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:08c8c697-6085-43ae-b966-8395bb919a6ep_t<p>Solution is given by Vidar Berg on my other ticket with similar question. Thanks for the solution.</p> <p>Link to the solution&nbsp;&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/41506/cant-access-flash-when-bootloader-is-present">https://devzone.nordicsemi.com/f/nordic-q-a/41506/cant-access-flash-when-bootloader-is-present</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/190869?ContentTypeID=1Tue, 04 Jun 2019 15:24:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f367eede-4ac1-4838-8ec3-7af961049333Vidar Berg<p>Hi,</p> <p>It&#39;s recommended to use the <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s130.sds/dita/softdevices/s130/flash_mem_api/flash_mem_api.html?cp=4_7_2_0_7">Softdevice flash API</a> if you are going to do flash operations while the Softdevice is enabled. Anyway, could you provide a minimal example so I can reproduce the problem here? It&#39;s strange that the NVMC_READY_READY_Busy flag is not being cleared.&nbsp;</p><div style="clear:both;"></div>