diff --git a/boards/modalai/fc-v1/default.px4board b/boards/modalai/fc-v1/default.px4board
index 576796f380..2c691d8bcd 100644
--- a/boards/modalai/fc-v1/default.px4board
+++ b/boards/modalai/fc-v1/default.px4board
@@ -4,6 +4,7 @@ CONFIG_BOARD_SERIAL_GPS1="/dev/ttyS0"
 CONFIG_BOARD_SERIAL_TEL1="/dev/ttyS6"
 CONFIG_BOARD_SERIAL_TEL2="/dev/ttyS4"
 CONFIG_BOARD_SERIAL_TEL3="/dev/ttyS1"
+CONFIG_BOARD_SERIAL_TEL4="/dev/ttyS3"
 CONFIG_DRIVERS_ADC_ADS1115=y
 CONFIG_DRIVERS_ADC_BOARD_ADC=y
 CONFIG_COMMON_BAROMETERS=y
diff --git a/platforms/nuttx/NuttX/nuttx b/platforms/nuttx/NuttX/nuttx
index ca1938fbcc..8660572a3c 160000
--- a/platforms/nuttx/NuttX/nuttx
+++ b/platforms/nuttx/NuttX/nuttx
@@ -1 +1 @@
-Subproject commit ca1938fbcccc1a0a3429b5d141a92324e790b025
+Subproject commit 8660572a3c69e0e2ca24c3cabeaaaae3372a6960