diff --git a/.ci/Jenkinsfile-compile b/.ci/Jenkinsfile-compile
index fea59e2ea0..63c1c73f11 100644
--- a/.ci/Jenkinsfile-compile
+++ b/.ci/Jenkinsfile-compile
@@ -41,7 +41,6 @@ pipeline {
                      "cubepilot_cubeyellow_console",
                      "cubepilot_cubeyellow_default",
                      "holybro_durandal-v1_default",
-                     "holybro_durandal-v1_stackcheck",
                      "holybro_kakutef7_default",
                      "holybro_pix32v5_default",
                      "intel_aerofc-v1_default",
diff --git a/.github/workflows/compile_nuttx.yml b/.github/workflows/compile_nuttx.yml
index 604df86bf5..b3068fbd4a 100644
--- a/.github/workflows/compile_nuttx.yml
+++ b/.github/workflows/compile_nuttx.yml
@@ -27,7 +27,6 @@ jobs:
           cubepilot_cubeyellow_console,
           cubepilot_cubeyellow_default,
           holybro_durandal-v1_default,
-          holybro_durandal-v1_stackcheck,
           holybro_kakutef7_default,
           holybro_pix32v5_default,
           intel_aerofc-v1_default,
diff --git a/boards/holybro/durandal-v1/stackcheck.cmake b/boards/holybro/durandal-v1/stackcheck.cmake
deleted file mode 100644
index 60daf7c7b8..0000000000
--- a/boards/holybro/durandal-v1/stackcheck.cmake
+++ /dev/null
@@ -1,128 +0,0 @@
-
-px4_add_board(
-	PLATFORM nuttx
-	VENDOR holybro
-	MODEL durandal-v1
-	LABEL stackcheck
-	TOOLCHAIN arm-none-eabi
-	ARCHITECTURE cortex-m7
-	ROMFSROOT px4fmu_common
-	#BUILD_BOOTLOADER
-	IO px4_io-v2_default
-	TESTING
-#	UAVCAN_INTERFACES 2  - No H7 or FD can support in UAVCAN
-	SERIAL_PORTS
-		GPS1:/dev/ttyS0
-		TEL1:/dev/ttyS1
-		TEL2:/dev/ttyS2
-		TEL4:/dev/ttyS3
-	DRIVERS
-		adc/board_adc
-		#barometer # all available barometer drivers
-		barometer/ms5611
-		batt_smbus
-		#camera_capture
-		#camera_trigger
-		#differential_pressure # all available differential pressure drivers
-		distance_sensor # all available distance sensor drivers
-		#dshot
-		gps
-		heater
-		#imu # all available imu drivers
-		#imu/adis16448
-		#imu/adis16477
-		#imu/adis16497
-		#imu/bosch/bmi088
-		imu/invensense/icm20689
-		#irlock
-		#lights/blinkm
-		#lights/rgbled
-		lights/rgbled_ncp5623c
-		#magnetometer # all available magnetometer drivers
-		magnetometer/isentek/ist8310
-		#mkblctrl
-		#optical_flow # all available optical flow drivers
-		#osd
-		#pca9685
-		#power_monitor/ina226
-		#protocol_splitter
-#		pwm_input  - Need to create arch/stm32 arch/stm32h7 arch/kinetis and reloacate
-#					   all arch dependant code there
-		pwm_out_sim
-		pwm_out
-		px4io
-		#roboclaw
-		#tap_esc
-		telemetry # all available telemetry drivers
-		test_ppm
-		tone_alarm
-#		uavcan - No H7 or FD can support in UAVCAN yet
-	MODULES
-		airspeed_selector
-		#attitude_estimator_q
-		battery_status
-		#camera_feedback
-		commander
-		dataman
-		ekf2
-		#esc_battery
-		events
-		fw_att_control
-		fw_pos_control_l1
-		land_detector
-		#landing_target_estimator
-		load_mon
-		#local_position_estimator
-		logger
-		mavlink
-		mc_att_control
-		mc_hover_thrust_estimator
-		mc_pos_control
-		mc_rate_control
-		#micrortps_bridge
-		navigator
-		rc_update
-		#rover_pos_control
-		sensors
-		#sih
-		#temperature_compensation
-		#vmount
-		vtol_att_control
-	SYSTEMCMDS
-		#bl_update
-		dmesg
-		dumpfile
-		esc_calib
-		hardfault_log
-		i2cdetect
-		led_control
-		mixer
-		motor_ramp
-		motor_test
-		mtd
-		nshterm
-		param
-		perf
-		pwm
-		reboot
-		reflect
-		sd_bench
-		system_time
-		tests # tests and test runner
-		top
-		topic_listener
-		tune_control
-		usb_connected
-		ver
-		work_queue
-	EXAMPLES
-		#fixedwing_control # Tutorial code from https://px4.io/dev/example_fixedwing_control
-		#hello
-		#hwtest # Hardware test
-		#matlab_csv_serial
-		#px4_mavlink_debug # Tutorial code from http://dev.px4.io/en/debug/debug_values.html
-		#px4_simple_app # Tutorial code from http://dev.px4.io/en/apps/hello_sky.html
-		#rover_steering_control # Rover example app
-		#uuv_example_app
-		#work_item
-	)
diff --git a/boards/px4/fmu-v5/debug.cmake b/boards/px4/fmu-v5/debug.cmake
index 8d827883fe..14636aba14 100644
--- a/boards/px4/fmu-v5/debug.cmake
+++ b/boards/px4/fmu-v5/debug.cmake
@@ -10,6 +10,7 @@ px4_add_board(
 	IO px4_io-v2_default
 	TESTING
 	#UAVCAN_INTERFACES 2
+	CONSTRAINED_FLASH
 	SERIAL_PORTS
 		GPS1:/dev/ttyS0
 		TEL1:/dev/ttyS1
diff --git a/boards/px4/fmu-v5/stackcheck.cmake b/boards/px4/fmu-v5/stackcheck.cmake
index 4b31d0c0e3..11951eac4f 100644
--- a/boards/px4/fmu-v5/stackcheck.cmake
+++ b/boards/px4/fmu-v5/stackcheck.cmake
@@ -10,6 +10,7 @@ px4_add_board(
 	IO px4_io-v2_default
 	TESTING
 	#UAVCAN_INTERFACES 2
+	CONSTRAINED_FLASH
 	SERIAL_PORTS
 		GPS1:/dev/ttyS0
 		TEL1:/dev/ttyS1
diff --git a/src/lib/ecl b/src/lib/ecl
index dd3ffc4192..d85e24d3ca 160000
--- a/src/lib/ecl
+++ b/src/lib/ecl
@@ -1 +1 @@
-Subproject commit dd3ffc419238bfc7d9b7e3be92a178c2cf7756f1
+Subproject commit d85e24d3ca767b48bdbb1594b564d30df5777769