完全虚构的教程资料。/ Fully synthetic tutorial material.
批准的维护窗口为每周二当地时间 02:00–04:00。升级前应确认主、备网关均在线，并保留 24 小时内导出的配置备份。
The approved maintenance window is Tuesday 02:00–04:00 local time. Before upgrading, confirm that both gateways are online and retain a configuration export created within the previous 24 hours.
网关重启后连续 10 分钟没有上报心跳时，回退到 3.1.4，并把该次升级标记为失败。
If the gateway reports no heartbeat for ten continuous minutes after restart, roll back to 3.1.4 and mark the upgrade as failed.
| 设备 / Device | 最低固件 / Minimum firmware | 协议 / Protocol | 状态 / Status |
|---|---|---|---|
| 环境传感器 S-10 / Sensor S-10 | 3.0.0 | MQTT 5.0 | 支持 / Supported |
| 门禁控制器 A-20 / Access Controller A-20 | 3.1.0 | HTTPS | 支持 / Supported |
| 摄像机 C-30 / Camera C-30 | — | — | 演示环境不支持 / Not supported in the demo |