https://devzone.nordicsemi.com/f/nordic-q-a/95504/flash-not-being-cleared-on-segger-embedded-studio-downloadI have two variants of a Blood Pressure cuff (a proprietary protocol). One supports stored data and the other does not. When I build and flash the stored-data variant and the client does not delete them after upload, the stored data is saved in flashen-USTelligent Community 13Mon, 09 Jan 2023 19:58:39 GMThttps://devzone.nordicsemi.com/thread/403931?ContentTypeID=1Mon, 09 Jan 2023 19:58:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:988d6a0a-abfc-48bf-af9b-a565429e5cbebrianreinhold<p>Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/403930?ContentTypeID=1Mon, 09 Jan 2023 19:55:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e40de86b-0be5-49a9-ae82-f7bc8d5c7b46Vidar Berg<p>Hi,</p> <p>SES defaults to using &#39;sector erase&#39; which means it will only erase overlapping sections. Thus, data placed outside of the FW image&#39;s address range will not become erased. If you want your FLASH to be fully erased prior to programming, you can select the &quot;Erase All&quot; option as shown in the screenshot below.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1673294099651v1.png" alt=" " /></p><div style="clear:both;"></div>