diff --git a/scripts/install.sh b/scripts/install.sh
index 5eba151..92c688f 100644
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -410,6 +410,18 @@ write_service() {
 enable_and_start() {
     if [ -x "$OPENWRT_INIT_PATH" ] && { [ -x /sbin/procd ] || [ -x /sbin/ubusd ]; }; then
         "$OPENWRT_INIT_PATH" enable
+		# Stop explicitly before restart. Some procd/rc.common variants return
+		# from restart while the previous process is still inside its bounded
+		# VoWiFi cleanup, so the replacement can race the host-wide instance
+		# lock and enter a respawn cycle.
+		"$OPENWRT_INIT_PATH" stop || true
+		local stop_attempt
+		for stop_attempt in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40; do
+			if ! "$OPENWRT_INIT_PATH" running; then
+				break
+			fi
+			sleep 1
+		done
         if "$OPENWRT_INIT_PATH" restart; then
             # Modems may need several seconds to release and reopen their AT
             # port after procd stops the previous process. Require consecutive