[21:09:00.566] ========================================
[21:09:00.567] MCU OTA Upgrader v2
[21:09:00.567]   bin=/data/local/tmp/mcu_app.bin
[21:09:00.567]   project=10040
[21:09:00.567]   port=/dev/ttyS7 @ 460800 8N1
[21:09:00.567] ========================================
[21:09:00.572] [BIN] size=215904 CRC16=0x3E61
[21:09:00.574] 三步握手...
[TX] Setup FF AA 00 07 01 01 F6 
[RX] SETUPACK FF AA 00 07 01 03 F4 
[21:09:00.721] [OK] 三步握手成功
[21:09:00.721] === 升级前版本查询 ===
[TX] VER_REQ FF AA 00 0A 02 06 01 86 02 64 
[21:09:03.738] [WARN] 升级前版本未获取到（MCU 可能未就绪）
[21:09:03.738] 升级前 MCU 版本: (未知)
[21:09:03.738] === UPDATE_REQ ===
[TX] UPD_REQ FF AA 00 13 02 06 07 80 04 31 30 30 34 30 00 03 4B 60 B6 
[21:09:03.749] [OK] UPDATE_REQ seq=2
[21:09:03.899] === UPDATE_BEGIN ===
[TX] UPD_BEGIN FF AA 00 12 03 06 07 81 00 03 4B 60 31 30 30 34 30 B9 
[21:09:03.913] [OK] UPDATE_BEGIN seq=3
[21:09:03.913] === 数据传输 ===