https://devzone.nordicsemi.com/f/nordic-q-a/67940/secure-uart-dfu-can-t-jump-to-applicationHi, I am trying to get Secure UART Bootloader to work and followed the steps mentioned here . I generated the Keys and updated the dfu_public_key.c file in the project at secure_bootloader_uart_mbr_pca10056 Erased the chip by going into Targeten-USTelligent Community 13Thu, 05 Nov 2020 07:32:14 GMThttps://devzone.nordicsemi.com/thread/278533?ContentTypeID=1Thu, 05 Nov 2020 07:32:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee4a7ae9-2224-49bf-93c5-39342b5bd625tejaChintalapati<p>Thanks Vidar! That makes complete sense.</p> <p></p> <p>I followed instructions from this <a href="https://devzone.nordicsemi.com/nordic/short-range-guides/b/getting-started/posts/adjustment-of-ram-and-flash-memory">link</a> and updated the Flash start and Ram start per your suggestion and everything&#39;s working the way it should.</p> <p></p> <p>Appreciate the help. <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/278454?ContentTypeID=1Wed, 04 Nov 2020 13:34:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0c2a4e05-bf89-4537-9500-c81372ce7b62Vidar Berg<p>Hello,</p> <p>Please make sure you are using the same linker settings as the <span style="font-weight:400;">blinky_pca10056_mbr project. The application must start at address 0x1000 in flash and not use RAM below 0x20000008 in order to work with the <a href="https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/mbr_bootloader/mbr_bootloader.html?cp=4_7_3_0_11">MBR </a>which occupies the first flash page. </span></p><div style="clear:both;"></div>