https://devzone.nordicsemi.com/f/nordic-q-a/126624/nrf91-soft-sim-profile-load-over-at-commandsHi, We are using the NRF9151 with AT commands to replace our SIMCOM modems. We would like to write the SIM profile data to the modem via AT commands just like SIMCOM does it. Example: AT+CFOSSCFG=&quot;PROFILE&quot;,&quot;01120809101010325406360214980010325476981032140320000000000000000000000000000000000420000102030405060708090A0B0C0D0E0F0520000102030405060708090A0B0C0D0E0F0620000102030405060708090A0B0C0D0E0Fen-USTelligent Community 13Thu, 22 Jan 2026 00:40:08 GMThttps://devzone.nordicsemi.com/thread/559318?ContentTypeID=1Thu, 22 Jan 2026 00:40:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f6c24217-7e2c-464f-82c3-62fe2e236321Michal<p>Hello,</p> <p>I assume you have seen the Onomondo nRF SoftSIM library?&nbsp;<a href="https://github.com/onomondo/nrf-softsim">https://github.com/onomondo/nrf-softsim</a></p> <p>Also, our Serial Modem is extendable with custom AT commands as well:&nbsp;<a href="https://docs.nordicsemi.com/bundle/addon-serial_modem-latest/page/app/sm_extending.html">https://docs.nordicsemi.com/bundle/addon-serial_modem-latest/page/app/sm_extending.html</a></p> <p>Best regards,</p> <p>Michal</p><div style="clear:both;"></div>