nRF9151 custom board with Serial Modem: TF-M logs received but no AT responsehttps://devzone.nordicsemi.com/f/nordic-q-a/128351/nrf9151-custom-board-with-serial-modem-tf-m-logs-received-but-no-at-responseTitle: Hi, We want to use the nRF9151 as an external LTE modem , controlled from another MCU through UART AT commands . We have designed our own PCB with the nRF9151. For the first bring-up, we are loading the firmware using the nRF Connect foren-USTelligent Community 13Thu, 04 Jun 2026 14:14:58 GMTRE: nRF9151 custom board with Serial Modem: TF-M logs received but no AT responsehttps://devzone.nordicsemi.com/thread/567421?ContentTypeID=1Thu, 04 Jun 2026 14:14:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d897be5e-c7b6-4757-b922-134714fc6730Marc Martin<p>nRF9151 pins:<br /><br />TX: P0.27</p> <p>RX: P0.26</p> <p>RTS: P0.14</p> <p>CTS: P0.15</p> <p>DTR: P0.8</p><div style="clear:both;"></div>