MCBoot DFU failshttps://devzone.nordicsemi.com/f/nordic-q-a/65424/mcboot-dfu-failsThis happens when I try to do DFU on my Thingy 91. I am trying to download the file thingy91_item_dfu_2020-04-29 file and the same also happens when I try update the modem. Any suggestions what the issue could be? I&#39;ve seen other peopl having similaren-USTelligent Community 13Tue, 01 Sep 2020 11:32:56 GMTRE: MCBoot DFU failshttps://devzone.nordicsemi.com/thread/267442?ContentTypeID=1Tue, 01 Sep 2020 11:32:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c7581e8d-fa57-435d-94b5-aa6193d2ed47Heidi<p>Hi!</p> <p>So this is on macOS. What version of the Thingy:91 do you have?&nbsp; It&#39;s printed on&nbsp;the white sticker on the device if you take the silicon cover.&nbsp;</p> <p>My first suggestion is to uninstall the JLink Drivers and nRF Connect and install both again. You will have to do this separately.&nbsp;</p> <p></p> <p>If this does not work, please provide me with the full log from nRF Connect Programmer application, which you can get by pressing this button.&nbsp;</p> <p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-643ca2abe02844faaeea331e70cc71b2/logging.PNG" /></p> <p>Best regards,</p> <p>Heidi</p><div style="clear:both;"></div>RE: MCBoot DFU failshttps://devzone.nordicsemi.com/thread/267308?ContentTypeID=1Mon, 31 Aug 2020 17:12:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:19e84416-93a7-49a7-b693-cc0ae8c21063JoelRietz<p>Nope, I just picked it out of the box and I try to program it using USB now for the first time.&nbsp;</p><div style="clear:both;"></div>RE: MCBoot DFU failshttps://devzone.nordicsemi.com/thread/267306?ContentTypeID=1Mon, 31 Aug 2020 17:10:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4ece603b-186c-4e8b-9a26-9aa44a7680f6matt.heins<p>Has the 9160 been programmed via SWD with a program containing MCUBoot?&nbsp;</p><div style="clear:both;"></div>RE: MCBoot DFU failshttps://devzone.nordicsemi.com/thread/267302?ContentTypeID=1Mon, 31 Aug 2020 17:05:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cf1f4213-5a55-489c-9906-6bf96812c9f4JoelRietz<p>Yes</p><div style="clear:both;"></div>RE: MCBoot DFU failshttps://devzone.nordicsemi.com/thread/267300?ContentTypeID=1Mon, 31 Aug 2020 16:44:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d93f87f1-4d78-4f7a-9648-83262538f9bematt.heins<p>Did you hold down the button when you powered on the device to put it in DFU mode?</p><div style="clear:both;"></div>