https://devzone.nordicsemi.com/f/nordic-q-a/126522/enable-approtect-through-uicr-with-a-tfm-projectHello, I am wondering how I can enable APPROTECT through UICR with a TFM project. Using ncs2.6.0 and nrf5340. My project makes use of TFM to separate secure and non-secure partitions. The issue I am running into is that using any of the followingen-USTelligent Community 13Thu, 15 Jan 2026 22:54:51 GMThttps://devzone.nordicsemi.com/thread/558839?ContentTypeID=1Thu, 15 Jan 2026 22:54:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1e1c6355-7aab-47dc-956b-e1d67731a88dHieu<p>Hi dev_j,</p> [quote user=""]I am wondering if there are ways I can solve this issue. It might be because I am reading/writting to a secure area (UICR) from a non-secure area.[/quote] <p>You guessed correctly. You will need to create a custom secure partition/service in TF-M and use it. This sample shows how that is done:&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-3.2.1/page/nrf/samples/tfm/tfm_secure_peripheral/README.html">TF-M secure peripheral partition</a>.</p> <p>However,&nbsp;do you need to set it from firmware? You should be able to set it with&nbsp;during programming. Refer to:&nbsp;<a href="https://docs.nordicsemi.com/bundle/nan_042/page/APP/nan_production_programming/device_protection.html">Enabling device protection</a>.</p> <p>Hieu</p><div style="clear:both;"></div>