https://devzone.nordicsemi.com/f/nordic-q-a/10516/dfu-s310-via-android-phoneHi guys I have a custom board with NRF51422QFAA, load &quot;s310_nrf51422_2.0.1_softdevice&quot;, program on &quot;nRF51_SDK_7.2.0&quot; the bootloader I used is &quot;dual_bank_ble_s310&quot; change settting: IROM1 0x3C000 0x3C00 IRAM1 0x20002C00 0x1380 IRAM2 0x20003F80en-USTelligent Community 13Tue, 01 Dec 2015 05:37:56 GMThttps://devzone.nordicsemi.com/thread/39105?ContentTypeID=1Tue, 01 Dec 2015 05:37:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:38518868-3d25-473f-9012-edceaaf3904aDaniel.Chiu<p>Thanks! I created the distribution package and DFU successful.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/39104?ContentTypeID=1Fri, 27 Nov 2015 13:36:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca1fd016-2b5d-4d44-b740-802e2300794eVidar Berg<p>Did you create a <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk51.v10.0.0/bledfu_example_image.html?cp=4_1_0_4_3_1_1_2">distribution package</a> (.zip) of the application you tried to upload. Note that PC MCP will accept .hex files, but creates the .zip including the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk51.v10.0.0/bledfu_example_image.html?cp=4_1_0_4_3_1_1_2">init</a> file &quot;under the hood&quot;.</p><div style="clear:both;"></div>