https://devzone.nordicsemi.com/f/nordic-q-a/20151/invalid-object-on-dfuHi, When trying to update an app using Secure DFU, we get invalid object error. The error comes from dfu_decode_command. Using nRF5 SDK 12.2.0 on custom nRF51822 board. Update package was generated with nrfutil version 2.1.0. Trying with nRF Connecten-USTelligent Community 13Fri, 03 Mar 2017 12:11:26 GMThttps://devzone.nordicsemi.com/thread/78478?ContentTypeID=1Fri, 03 Mar 2017 12:11:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b219c775-ff58-4a2e-b136-460fc78599d9Hung Bui<p>Hi Cyril,</p> <p>Could you tell how do you generate the update package ? Invalid Object error return could be from:</p> <p>The data object did not match the firmware and hardware requirements, the signature was missing, or parsing the command failed.</p> <p>Do you set any version ? Note that hardware version should match with your chip , this case it should be &quot;--hw-version 51&quot;</p><div style="clear:both;"></div>