diff --git a/zephcore/boards/common/esp32s3_pwm_led.conf b/zephcore/boards/common/esp32s3_pwm_led.conf
deleted file mode 100644
index 97f8f3c..0000000
--- a/zephcore/boards/common/esp32s3_pwm_led.conf
+++ /dev/null
@@ -1,15 +0,0 @@
-# Enable PWM on ESP32-S3 sysbuild targets (shared heartbeat/TX LED brightness,
-# see the heartbeat-pwm-led / lora-tx-pwm-led devicetree aliases consumed by
-# helpers/ui/ui_common.c and adapters/board/ZephyrBoard.cpp).
-#
-# Deliberately NOT in the board *_defconfig: that file is shared by every
-# sysbuild image for the board, including mcuboot, whose minimal kernel
-# config has no k_sem_give()/k_sem_take() -- CONFIG_PWM=y there links fine for
-# the app image but fails mcuboot's link with "undefined reference to
-# z_impl_k_sem_give/take" (drivers/pwm/pwm_led_esp32.c uses a semaphore).
-# EXTRA_CONF_FILE scopes this to the app ("zephcore") image only.
-#
-# Build with:
-#   -DEXTRA_CONF_FILE="boards/common/esp32s3_usb.conf;boards/common/esp32s3_pwm_led.conf"
-
-CONFIG_PWM=y
diff --git a/zephcore/boards/esp32/heltec_wireless_tracker_v2/heltec_wireless_tracker_v2_procpu.dts b/zephcore/boards/esp32/heltec_wireless_tracker_v2/heltec_wireless_tracker_v2_procpu.dts
index 36bb17a..a56894b 100644
--- a/zephcore/boards/esp32/heltec_wireless_tracker_v2/heltec_wireless_tracker_v2_procpu.dts
+++ b/zephcore/boards/esp32/heltec_wireless_tracker_v2/heltec_wireless_tracker_v2_procpu.dts
@@ -74,11 +74,10 @@
 
 	/* Same GPIO18 net as status_led above, driven through the LEDC PWM
 	 * peripheral instead of a raw GPIO write. Single LED doubling as
-	 * heartbeat, message/shutdown flash and LoRa TX indicator (same
-	 * "Option 1" shared-brightness pattern as T096, see helpers/ui/ui_common.c
-	 * and adapters/board/ZephyrBoard.cpp: heartbeat-pwm-led/lora-tx-pwm-led
-	 * aliases give every one of those events a single 0-100 brightness knob,
-	 * RAM-only, on top of the existing persisted on/off gate. */
+	 * heartbeat, message/shutdown flash and LoRa TX indicator: the
+	 * heartbeat-pwm-led/lora-tx-pwm-led aliases give every one of those
+	 * events a single persisted 0-100 brightness knob, on top of the
+	 * existing persisted on/off gate. */
 	pwm_leds {
 		compatible = "pwm-leds";