https://devzone.nordicsemi.com/f/nordic-q-a/63765/getting-problem-to-write-after-20-times-data-in-flashHello All, I am working on nRF51822 use SDK nRF5 12.3.0 version in IAR workbench. I am write data in the flash so for that i follow below steps, Step 1: press button to start writing data in to flash. step 1: write 2 data in to flash. anden-USTelligent Community 13Wed, 15 Jul 2020 13:00:00 GMThttps://devzone.nordicsemi.com/thread/260155?ContentTypeID=1Wed, 15 Jul 2020 13:00:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f3be097-0d11-40f4-8548-27fc7bd760feKenneth<p>Hi,</p> <p>Looks like you are mixing different ways of accessing the flash (through direct register access, libraries and softdevice calls). This won&#39;t work well. I suggest to go for one implementation and stick with it. You should find examples in the nRF5 SDK, but you may also find these useful:&nbsp;</p> <p><a href="https://github.com/NordicPlayground/nRF5-flash-storage-examples">https://github.com/NordicPlayground/nRF5-flash-storage-examples</a></p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/18083/fds---pstorage---fstorage---which-to-use">https://devzone.nordicsemi.com/f/nordic-q-a/18083/fds---pstorage---fstorage---which-to-use</a></p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>