https://devzone.nordicsemi.com/f/nordic-q-a/91344/thingy91-update-problemHello, I&#39;m tryng to update nRF9160sip (rev b1), I push sw4 on power on and I see &quot;MCUBOOT&quot; device on &quot;Programmer v3.03&quot; Then I select file &quot;mfw_nrf9160_1.3.2.zip&quot; and i click write but the device disconnects...this is the log file 2022-08en-USTelligent Community 13Thu, 25 Aug 2022 11:08:34 GMThttps://devzone.nordicsemi.com/thread/383240?ContentTypeID=1Thu, 25 Aug 2022 11:08:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9556ac63-c5d4-4fbf-9fa3-8c27aa2c75b7Amanda Hsieh<p>Hi,&nbsp;</p> [quote user=""]2022-08-25T09:52:45.703Z INFO Writing D:\tmp\nordic\thingy91\mfw_nrf9160_1.3.2.zip to device 22EBD22AF636A302[/quote] <p>Are you using <a href="https://www.nordicsemi.com/Products/Development-hardware/Nordic-Thingy-91">thingy91</a>&nbsp;or <a href="https://www.nordicsemi.com/Products/Development-hardware/nRF9160-DK">nRF9160DK</a>? The device number doesn&#39;t like thingy91. What is the hardware version on the withe sticker on the board?</p> <p>If you are using thingy91, you should <span>Press&nbsp;</span><strong>SW3</strong><span>&nbsp;while switching&nbsp;</span><strong>SW1</strong><span>&nbsp;to the&nbsp;</span><strong>ON</strong><span>&nbsp;position. P</span>lease see this <a href="http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_thingy91_gsg.html#update-the-modem-firmware-on-the-nrf9160-sip">guide</a>.&nbsp;</p> <p>Regards,<br />Amanda</p><div style="clear:both;"></div>