diff --git a/utils/upload_config_hex.sh b/utils/upload_config_hex.sh
new file mode 100755
index 0000000..7352764
--- /dev/null
+++ b/utils/upload_config_hex.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -euo pipefail
+
+HEXFILE="$1"
+
+if [ ! -f "$HEXFILE" ]; then
+	echo "$HEXFILE cannot be accessed."
+	exit 1
+fi
+
+JLinkExe -device STM32F030C8 -speed 1000 -if SWD <<EOF
+connect
+loadfile $HEXFILE
+r
+g
+exit
+EOF