https://devzone.nordicsemi.com/f/nordic-q-a/82290/thingy-91-nrf9160-eeprom-configurationHello, I am developing a custom board based on the Thingy:91 design. I hope to be able to run the asset tracking applications initially and build on top of it. Nordic documentation refers to information flashed to the EEPROM during factory setup whichen-USTelligent Community 13Fri, 03 Dec 2021 08:08:59 GMThttps://devzone.nordicsemi.com/thread/341788?ContentTypeID=1Fri, 03 Dec 2021 08:08:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d874274d-6f8b-4ab9-b70d-69e27502ce45&#216;yvind<p>Hi,&nbsp;</p> <p>Sorry for the late reply. The information is only needed on the Thingy:91 in regards to tuning. As the Thingy:91 is designed to function worldwide, i.e. there are extra values stored in&nbsp;the flash. When designing a custom board based on the Thingy:91 reference design you can omit the flash to reduce the BOM, and store needed information&nbsp;in the nRF9160 flash.</p> <p>Or you can keep the flash if wanted, the information stored in&nbsp;<span>region 0x0600 - 0x07FF is not relevant for custom designs.</span><br /><br />Kind regards,<br />Øyvind</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/341635?ContentTypeID=1Thu, 02 Dec 2021 08:14:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:19818f12-cdfb-456e-acc1-ca95df1a2084&#216;yvind<p>Hello,&nbsp;<br /><br />I&#39;ve needed to forward this question to our Thingy:91 team. Will get back to you within today (Thursday).&nbsp;<br /><br />Kind regards,<br />Øyvind</p><div style="clear:both;"></div>