https://devzone.nordicsemi.com/f/nordic-q-a/24122/counting-flash-writing-operations-in-bootloader-bug-maybeHello, I&#39;m working on the bootloader using SDK13.1. In the file dfu_req_handling.c there is a variable called m_flash_operations_pending that gets incremented with every call to nrf_dfu_flash_store() or nrf_dfu_flash_erase() . My question is whyen-USTelligent Community 13Fri, 11 Aug 2017 14:05:06 GMThttps://devzone.nordicsemi.com/thread/94980?ContentTypeID=1Fri, 11 Aug 2017 14:05:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34b03cec-77bf-4113-b36d-31582c2b4f65tesc<p>Hi Andy,</p> <p>Thank you very much for letting us know. I will investigate a little bit further, and report it to the developers.</p> <p>Regards,</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94979?ContentTypeID=1Mon, 07 Aug 2017 13:15:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10f3e756-2fe4-4e50-94df-693c7b10caf5Andy<p>I added a <code>m_flash_operations_pending++</code> before calling <code>nrf_dfu_settings_write()</code> and it solved my problem. I also passed the <code>dfu_data_write_handler</code> callback to those calls.</p><div style="clear:both;"></div>