https://devzone.nordicsemi.com/f/nordic-q-a/32889/errata-164-and-191-on-nrf52840-rev1Hi, I checked erratas for nRF52840 rev1 and #164 is gone but #191 is still there. Can I have both #164 and #191 active in my code and it won&#39;t cause problems on either engineering or final chip revisions? Or better I should detect chip revision in runtimeen-USTelligent Community 13Thu, 05 Apr 2018 14:20:25 GMThttps://devzone.nordicsemi.com/thread/127084?ContentTypeID=1Thu, 05 Apr 2018 14:20:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ec8a442f-85b6-49cf-82dc-0612cca4e838H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>It is strongly recommended to develop on the latest revision now that nRF52840 is in production.</p> <p>Erratum #164 was only present in nRF52840 engineering A (Fixed in engineering B and newer), while #191 is present in the from engineering B to the production ready variant of nRF52840.</p> <p>If you&#39;re using the Softdevice, both of these will be handled there, based on which SoftDevice version you&#39;re using.</p> <p>&nbsp;</p> <p>If you are developing/using a proprietary or 3rd party radio stack, I would recommend only implementing erratas/workaround for revision 1 (the production release of nRF52840).</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Håkon</p><div style="clear:both;"></div>