vivo刷機方法步驟

中文刷固件的教程：/robot/imgmsgData/7696431ece2444e9a729e17c6f86c9d6/index_1.html?t=1550125901518

英文刷固件的教程：/robot/imgmsgData/8aca31bd7fa64119950b9fe43c7b358d/index_1.html?t=1498439208004