https://devzone.nordicsemi.com/f/nordic-q-a/58344/nrfutil-dfu-ble-error-code-0x802a-nrf_error_sd_rpc_no_responseTo the kind attention of Nordic support team, I have got a 1. PCA10040 board, with ble secured bootloader installed 2. PCA10056 that I usually work with every day, these days 3. PCA10056 Preview (never used before) 4. PCA10059 I can uploaden-USTelligent Community 13Wed, 26 Feb 2020 13:02:38 GMThttps://devzone.nordicsemi.com/thread/236547?ContentTypeID=1Wed, 26 Feb 2020 13:02:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:38217041-6cac-45d9-8a17-fbc28014f5e0astella<p>I did the&nbsp;</p> <p>MSDDisable</p> <p>thing for the only board that was not working. And it worked, after that. Thank you Hung Bui, very nice insight</p> <p></p> <p><span></span> <br /><span><br /><br /></span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/236522?ContentTypeID=1Wed, 26 Feb 2020 12:13:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ac80139c-c36a-4bb4-9f22-7ea297cf218aHung Bui<p>Hi Stella,&nbsp;</p> <p>We suspect that it&#39;s the Jlink USB driver issue. Could you please check which Jlink driver you have on the PCA10056 board the PCA10056 preview board you have ? (You can use Jlink Configuratior to read the Jlink version on the boards)<br />Also could you try to disable MSD in the Jlink driver and test again? You can follow this instruction:&nbsp;<a href="https://docs.zephyrproject.org/1.12.0/tools/nordic_segger.html#disabling-the-mass-storage-device-functionality">https://docs.zephyrproject.org/1.12.0/tools/nordic_segger.html#disabling-the-mass-storage-device-functionality</a></p> <p>We have a similar case here a month ago that you may want to have a look:&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/56570/dfu-with-nrf-connect-linux-write-failure-with-unknown-value-0x8005">https://devzone.nordicsemi.com/f/nordic-q-a/56570/dfu-with-nrf-connect-linux-write-failure-with-unknown-value-0x8005</a></p><div style="clear:both;"></div>