diff --git a/docs/development/platform-upgrade-bundles.md b/docs/development/platform-upgrade-bundles.md
index 0e7696b3..606fd9df 100644
--- a/docs/development/platform-upgrade-bundles.md
+++ b/docs/development/platform-upgrade-bundles.md
@@ -34,7 +34,7 @@ node install-bundle.cjs --root /opt/qinglong --file /absolute/path/package.tar.g
 QL_DIR=/opt/qinglong QL_DATA_DIR=/opt/qinglong/data bash /opt/qinglong/shell/start-simplify.sh
 ```
 
-`--install` 拒绝非空目录，不覆盖既有配置。该包安装青龙及其 Node 生产依赖；首次启动仍需已有 Python、Bash、PM2、nginx 等相应运行环境，不会在线安装或替换它们。服务启动和系统自启按原手动安装流程配置。
+`--install` 拒绝非空目录，不覆盖既有配置。该包安装青龙及其 Node 生产依赖；首次启动仍需已有 Python、Bash、OpenSSL、PM2、nginx 等相应运行环境，不会在线安装或替换它们。手动启动脚本会在启动工作进程前完成首次 gRPC 证书准备，避免慢设备生成密钥耗尽工作进程的就绪期限；已有证书继续复用。服务启动和系统自启按原手动安装流程配置。
 
 ARMv6 glibc 小设备（例如 Raspberry Pi 1/Zero 的 Raspbian/Raspberry Pi OS 32 位系统）选择 `linux-armv6-glibc.tar.gz`，以同一安装器执行上述离线命令。该包要求 glibc >= 2.31、ARMv6 硬浮点 Node >= 20.18.1，不适用于 ARMv5、软浮点 Node 或旧版 glibc。安装和升级均不需要 Docker，也不会下载或替换 Node。
 
diff --git a/shell/start-simplify.sh b/shell/start-simplify.sh
index de68281b..bc9bd871 100644
--- a/shell/start-simplify.sh
+++ b/shell/start-simplify.sh
@@ -52,6 +52,17 @@ make_dir /etc/nginx/conf.d
 make_dir /run/nginx
 fix_config
 
+# Slow devices may need more than the worker's readiness window to generate
+# first-boot certificates. Reuse the regular initializer before starting workers.
+node <<'QL_PREPARE_GRPC_CERTS'
+require(require('node:path').join(process.env.QL_DIR, 'static/build/config/grpcCerts.js'))
+  .initGrpcCerts()
+  .catch((error) => {
+    console.error(error);
+    process.exitCode = 1;
+  });
+QL_PREPARE_GRPC_CERTS
+
 pm2 l &>/dev/null
 
 log_with_style "INFO" "$(t '🔄  2. 启动 nginx...')"
diff --git a/test/back/start-certificate-preparation.test.cjs b/test/back/start-certificate-preparation.test.cjs
new file mode 100644
index 00000000..827600e2
--- /dev/null
+++ b/test/back/start-certificate-preparation.test.cjs
@@ -0,0 +1,53 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const os = require('node:os');
+const path = require('node:path');
+const { spawnSync } = require('node:child_process');
+
+const startup = fs.readFileSync('shell/start-simplify.sh', 'utf8');
+const preparation = startup.slice(
+  startup.indexOf('\nfix_config\n'),
+  startup.indexOf('log_with_style "INFO" "$(t \'🔄'),
+);
+for (const fails of [false, true]) {
+  test(`manual startup ${
+    fails
+      ? 'stops on certificate failure'
+      : 'awaits certificates before starting supervision'
+  }`, (t) => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'ql-start-certs-'));
+    t.after(() => fs.rmSync(root, { recursive: true, force: true }));
+    const module = path.join(root, 'static/build/config/grpcCerts.js');
+    fs.mkdirSync(path.dirname(module), { recursive: true });
+    fs.writeFileSync(
+      module,
+      `exports.initGrpcCerts = () => new Promise((resolve, reject) => setTimeout(() => {
+      if (process.env.QA_CERT_FAILURE === '1') return reject(new Error('certificate preparation failed'));
+      require('node:fs').writeFileSync(require('node:path').join(process.env.QL_DIR, 'certs-ready'), 'ready');
+      resolve();
+    }, 50));`,
+    );
+    const result = spawnSync(
+      '/bin/bash',
+      [
+        '-c',
+        `set -e
+fix_config(){ :; }
+pm2(){ test -f "$QL_DIR/certs-ready"; touch "$QL_DIR/supervisor-started"; }
+${preparation}`,
+      ],
+      {
+        encoding: 'utf8',
+        env: {
+          ...process.env,
+          QL_DIR: root,
+          QA_CERT_FAILURE: fails ? '1' : '0',
+        },
+      },
+    );
+    assert.equal(result.status, fails ? 1 : 0, result.stderr);
+    assert.equal(fs.existsSync(path.join(root, 'supervisor-started')), !fails);
+    if (fails) assert.match(result.stderr, /certificate preparation failed/);
+  });
+}