diff --git a/hw/bsp/rx63n/boards/rx65n_cloud_kit/board.mk b/hw/bsp/rx63n/boards/rx65n_cloud_kit/board.mk
index a4f19b07..34a4b2cb 100644
--- a/hw/bsp/rx63n/boards/rx65n_cloud_kit/board.mk
+++ b/hw/bsp/rx63n/boards/rx65n_cloud_kit/board.mk
@@ -52,4 +52,4 @@ PYOCD_TARGET =
 
 # flash using rfp-cli
 flash: $(BUILD)/$(PROJECT).mot
-	rfp-cli -device rx65x -tool e2l -auto $^
+	rfp-cli -device rx65x -tool e2l -if fine -fo id FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF -auth id FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF -auto $^