https://devzone.nordicsemi.com/f/nordic-q-a/11533/dfu-version-in-zip-fileHi, In my project I am using nrfutil.exe tool to create a .zip by using the following command nrfutil.exe dfu genpkg j1.zip --application application_nrf51822_xxac.bin --application-version 0xFF --dev-revision 0xff --dev-type 0xff --sd-req 0xfffeen-USTelligent Community 13Wed, 18 May 2016 06:20:14 GMThttps://devzone.nordicsemi.com/thread/43598?ContentTypeID=1Wed, 18 May 2016 06:20:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e534461a-a185-4499-98c9-4eba47c9bb72Raj<p>I need to update boot loader through dfu So, to prevent the downgrade version update I tried to use the dfu version in manifest file.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43597?ContentTypeID=1Tue, 17 May 2016 02:01:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:357a105e-214e-47cf-9250-874ad37c66f1sam wagner<p>Raj, Why did you need to change the dfu_version in the .zip file in the first place? thanks, Sam</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43596?ContentTypeID=1Tue, 26 Jan 2016 10:21:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b9df2474-a982-4009-8911-6cd45a2a4421Raj<p>Hi, I got the solution for it. By using --dfu-ver parameter in command we can change the dfu version number i.e dfu_version. But it accepts only float values.</p><div style="clear:both;"></div>