https://devzone.nordicsemi.com/f/nordic-q-a/12065/regarding-application-size-for-dfuHello, This is in reference to the following: devzone.nordicsemi.com/.../ The post talks about the maximum size of application that one can in order to be able to update it using OTA DFU with dual bank architecture. I have cut-n-pasted a smallen-USTelligent Community 13Wed, 24 Feb 2016 21:45:44 GMThttps://devzone.nordicsemi.com/thread/45667?ContentTypeID=1Wed, 24 Feb 2016 21:45:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cbeed28d-df3e-45dd-aceb-5ac7f3ac8a34sam wagner<p>RK, thanks for the response. Just wanted to double confirm my understanding. Regards!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/45666?ContentTypeID=1Tue, 23 Feb 2016 00:37:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5fea7dd5-4d74-4368-bfd9-ab85a0a6748fRK<p>It&#39;s the .bin file size of course. The .hex file is just an ASCII representation of binary data and is hence much larger than the actual image. MCUs don&#39;t use hex files.</p><div style="clear:both;"></div>