https://devzone.nordicsemi.com/f/nordic-q-a/8216/dfu-bootloader-custom-boardI&#39;m trying to port the Dual Bank BLE DFU Bootloader to a custom board that we have. The only modification I have made in the bootloader was that I changed it so the internal clock source is used: SOFTDEVICE_HANDLER_APPSH_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATIONen-USTelligent Community 13Tue, 15 Sep 2015 09:22:58 GMThttps://devzone.nordicsemi.com/thread/29577?ContentTypeID=1Tue, 15 Sep 2015 09:22:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:347fb9f7-28b4-4b70-848b-92dc4923acbewim<p>ok, thanks, clear - that solved it!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/29576?ContentTypeID=1Mon, 14 Sep 2015 22:33:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ea072759-4efc-4914-9663-f10f73c1f7d1Ash<p>The solution was what Aryan below suggested - you must fill in the IRAM1 and IRAM2 values appropriately. You can look at the solution here to see the appropriate answer: <a href="https://devzone.nordicsemi.com/question/28793/dfu-dual-bank-example-with-pca10001/">devzone.nordicsemi.com/.../</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/29575?ContentTypeID=1Thu, 10 Sep 2015 14:56:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:860b576c-1243-45b2-a121-ae17bc49951cwim<p>Is your issue solved already? I have exactly the same problem.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/29578?ContentTypeID=1Tue, 21 Jul 2015 06:55:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:312448ba-e5b3-44ac-b40e-a7f714367022Susheel Nuguru<p>The bootlloader examples I see in SDK, i see that there are settings to IRAM2, why is it different here?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/29574?ContentTypeID=1Sun, 19 Jul 2015 22:52:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:460bd061-6446-4ff5-8551-5500651414c1Ash<p>Anybody had this problem? Still stuck here...</p><div style="clear:both;"></div>