https://devzone.nordicsemi.com/f/nordic-q-a/10686/single-buffer-dfuHi I have been using the double buffer DFU for a while now, and it works reliably for me. However, I am hitting the application size limit that can be handled by the double buffer mechanism. Up to about 72k it was fine, but now I am getting closeen-USTelligent Community 13Mon, 07 Dec 2015 13:06:29 GMThttps://devzone.nordicsemi.com/thread/39893?ContentTypeID=1Mon, 07 Dec 2015 13:06:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a5afca27-d0d2-425f-8d78-74d0f8e45924Vidar Berg<p>Hi, there&#39;s no single bank bootloader example for BLE in the SDK, but it should be sufficient to replace dfu_dual_bank.c in your project with dfu_single_bank.c, at least true for SDK v.8.x.x and later.</p><div style="clear:both;"></div>