diff --git a/Makefile b/Makefile
index cef1096..0b364a8 100644
--- a/Makefile
+++ b/Makefile
@@ -78,6 +78,16 @@ build: check-board
 	@echo "  ── Compilation pour $(BOARD) ──────────────────────────────"
 	$(PIO) run -e $(BOARD)
 
+
+#
+# partitions
+#
+partition: check-board
+	@echo ""
+	@echo "  ── flash de la partition pour $(BOARD) ───────"
+	python3 -m esptool --chip esp32-s3 --port $(PORT) --baud 460800 write-flash 0x8000 .pio/build/$(BOARD)/partitions.bin
+
+
 # ─────────────────────────────────────────────────────────────
 #  flash  – compilation + upload du firmware
 # ─────────────────────────────────────────────────────────────
diff --git a/platformio.ini b/platformio.ini
index 23a1015..8d0c1c1 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -58,10 +58,16 @@ build_flags =
 ;  Flash : 16 MB QIO  /  PSRAM : 8 MB OPI
 ; ─────────────────────────────────────────
 [env:esp32s3_n16r8v]
-board = esp32-s3-devkitc-1
-board_build.partitions    = default_16MB.csv
-board_upload.flash_size   = 16MB
-board_build.arduino.memory_type = qio_opi      ; OPI PSRAM
+board                           = esp32-s3-devkitc-1
+board_build.partitions          = default_16MB.csv
+
+board_upload.flash_size         = 16MB
+board_build.f_flash             = 80000000L    ; Force la flash à 80MHz
+
+board_upload.flash_mode         = dio
+board_build.arduino.memory_type = dio_opi
+board_build.flash_mode          = dio
+
 upload_speed  = 921600
 monitor_speed = 115200
 build_flags =