就照移动叔叔这个方法弄得，试了好几次啦，也没成功，求高手解释与帮助：

0719liubo

就照移动叔叔这个方法弄得，这结果出来这个，试了好几次啦，也没成功，求高手解释与帮助：

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Smart Phone Flash Tool
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SP FLASH TOOL ERROR : ( 8100 )

[Android USB] Can not find USB port !
[HINT]:

1. Lack of battery power for your target.
2. Hardware problem of your cable.
3. There is a leakage of usb hub if you are using a usb hub.
4. You do not install usb driver for Android download yet.
Please check above items or catch UART4 log to find help.