diff --git a/docs/install-profiles.md b/docs/install-profiles.md
index 8bded5e..48e0f72 100644
--- a/docs/install-profiles.md
+++ b/docs/install-profiles.md
@@ -19,6 +19,12 @@ cd /home/live/douyinyoutube   # 或你的克隆路径
 sudo bash upgrade-live.sh
 ```
 
+若仓库只更新了 **`live-console.service` 模板**（例如 `StartLimitIntervalSec`），可单独刷新单元：
+
+```bash
+sudo bash refresh-live-unit.sh
+```
+
 ## What Each Script Does
 
 ### `install-hub.sh`
diff --git a/refresh-live-unit.sh b/refresh-live-unit.sh
new file mode 100644
index 0000000..efed174
--- /dev/null
+++ b/refresh-live-unit.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT_DIR="$(cd "$(dirname "$0")" && pwd)"
+exec bash "$ROOT_DIR/scripts/linux/refresh_live_console_unit.sh" "$@"
diff --git a/scripts/linux/lib/common.sh b/scripts/linux/lib/common.sh
index ce29e39..3b9bb9c 100644
--- a/scripts/linux/lib/common.sh
+++ b/scripts/linux/lib/common.sh
@@ -254,6 +254,8 @@ Environment=PORT=$PORT
 ExecStart=$ROOT_DIR/start.sh
 Restart=always
 RestartSec=5
+# 避免构建/依赖短暂失败时触发 systemd 默认「5 次/10s」后永久停跑（表现为 live-edge 502、:8001 无监听）
+StartLimitIntervalSec=0
 
 [Install]
 WantedBy=multi-user.target
diff --git a/scripts/linux/probe_live_access.sh b/scripts/linux/probe_live_access.sh
index bbaffe1..084c844 100644
--- a/scripts/linux/probe_live_access.sh
+++ b/scripts/linux/probe_live_access.sh
@@ -64,3 +64,15 @@ echo "2) Try:  http://${LAN_IP}:${PORT}/   (direct control plane, bypasses :80 a
 echo "3) live.local needs mDNS (Android often OK; Windows may need Bonjour or use IP)."
 echo "4) If OK on IP but not live.local: Avahi on this host — systemctl status avahi-daemon"
 echo ""
+
+if ! systemctl is-active live-console.service >/dev/null 2>&1; then
+  echo "=== Fix live-console (your case: edge OK, :${PORT} down) ==="
+  echo "sudo systemctl reset-failed live-console.service 2>/dev/null || true"
+  echo "sudo systemctl enable --now live-console.service"
+  echo "sleep 3 && curl -sf http://127.0.0.1:${PORT}/health && echo OK || echo still failing — logs:"
+  echo "sudo journalctl -u live-console.service -n 80 --no-pager"
+  echo ""
+  echo "After git pull / code update, prefer: sudo bash upgrade-live.sh"
+  echo "Only systemd unit changed?  sudo bash refresh-live-unit.sh"
+  echo ""
+fi
diff --git a/scripts/linux/refresh_live_console_unit.sh b/scripts/linux/refresh_live_console_unit.sh
new file mode 100644
index 0000000..4966113
--- /dev/null
+++ b/scripts/linux/refresh_live_console_unit.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+# git pull 后若只改了 systemd 模板（如 StartLimit），执行本脚本重写 live-console.service 并 enable --now
+set -euo pipefail
+
+SELF_DIR="$(cd "$(dirname "$0")" && pwd)"
+INSTALL_TAG="refresh-unit"
+. "$SELF_DIR/lib/common.sh"
+
+ensure_root "$@"
+load_env
+log "Rewriting /etc/systemd/system/live-console.service from repo"
+install_live_console_service
+log "Done. Check: systemctl status live-console.service --no-pager"