https://devzone.nordicsemi.com/f/nordic-q-a/19419/fds-with-bootloader-sdk12-1-and-sds132v3-0-0-nrf52Hello, I want to use the FDS libraries in order to store some data into nrf52&#39;s flash in my application and I have a bootloader to allow secure dfu by ble. I manage to store, read and update records in my application without bootloader and it&#39;sen-USTelligent Community 13Thu, 02 Feb 2017 20:13:53 GMThttps://devzone.nordicsemi.com/thread/75364?ContentTypeID=1Thu, 02 Feb 2017 20:13:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f51a932d-d693-4c48-bd59-699ac728055dPetter Myhre<p>What is the starting address of your bootloader? Fstorage should use the flash area below the bootloader by getting the starting address of the bootloader from NRF_UICR-&gt;NRFFW[0]. In your application, could you use the debugger to check what fs_flash_page_end_addr() returns?</p><div style="clear:both;"></div>