https://devzone.nordicsemi.com/f/nordic-q-a/86380/tf-m-vs-spm-feature-comparisonHello, I am doing some research on building applications for a nRF9160 DK for an evaluation project we working on. One part that I am unclear on is whether to choose to build with SPM or TF-M. I am having difficulty finding information on the featuresen-USTelligent Community 13Tue, 05 Apr 2022 15:59:02 GMThttps://devzone.nordicsemi.com/thread/361906?ContentTypeID=1Tue, 05 Apr 2022 15:59:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d24de3bd-7c5f-4e55-8cf0-61ce073e202ewh-eric<p>Awesome, thank you for the correction/clarification on SPM vs TF-M.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/361215?ContentTypeID=1Fri, 01 Apr 2022 11:46:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:109bc4c1-8504-4cdb-a644-e33d3d9da3f6Hakon<p>Hello,</p> [quote user=""]Is there a feature comparison somewhere?[/quote] <p>I don&#39;t think there is one yet. You can basically think of SPM as a subset of TF-M. SPM just sets all peripherals to non-secure before jumping to the non-secure image. TF-M is meant to do a whole lot more. I suggest you read more about it <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_tfm.html">here</a>.</p> [quote user=""]Are there any current estimates as when SPM might be deprecated in favor of TF-M?[/quote] <p>SPM will not be deprecated, at least that&#39;s not the plan. But TF-M will be production ready at some point, although I can&#39;t tell you when exactly that will happen.</p> [quote user=""]If we use SPM for building an application, is it possible to upgrade later on to a TF-M-based one via OTA?[/quote] <p>In theory it should work, as the SPM/TF-M are merged into one image before DFU is performed. There can be some issues with compatibility between MCUboot and TF-M.</p><div style="clear:both;"></div>