dx80系统崩溃，求助系统恢复，或者升级，刷机

[wbp121]

本人dx80在最近一次使用过程中，突然断电，重启以后，就出现黑屏，无法显示进入系统，先求助各位，有没有什么办法，恢复系统，刷机也好，升级也好，系统重做也好，能用就行，返售后过程太长！

[xuhyoyeon1]

设备网络通么，通的话 就后台进管理界面看看sys log,（要是硬件故障就只能返售后了）
尝试恢复出厂设置。

[7811wuWU]

Factory reset DX80 using the mute and volume
buttons
Follow these steps to factory reset a DX80 on boot up. If the device is on,
press and hold the power button until the device shuts down before you
continue.
1. Locate the Mute and Volume up buttons.
2. Press and hold the Volume Up button and power on the device.
3. Release the Volume Up button when the Mute button is lit red, then
press the Mute button.
Wait while the device reverts to the default factory settings. The device
restarts automatically when finished. This may take a few minutes.
When the device has been successfully reset to factory settings, the
Setup assistant starts and you will see the Welcome screen.
Factory reset DX80 using the reset button
To use this method, the DX80 must be up and running.
1. Flip the connector cover up to uncover the connector panel at the rear
of the device.
2. Use the tip of a pen (or similar) to press the recessed reset button.
Hold the button for 1-2 seconds, until a notification Resetting to factory
settings shows on screen.
3. Wait while the device reverts to the default factory settings. The device
restarts automatically when finished. This may take a few minutes.
When the device has been successfully reset to factory settings, the
Setup assistant starts and you will see the Welcome screen.

[消炎片]

楼上正解。