刷机出现错误 跪求求大神

635728859

正在升级中突然电脑弹出未识别的USB设备 手机显示升级失败

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dloading module is SYSTEM
check 16bit CRC per 4KB failed
dload: check SYSTEM module failed
Update /sdcard/dload/update.app failed
Exit Force mode SD upgrade.....................................................