PiPO M8HD - Manual (Page 41)

４１
Note: Do not turn on ―USB Debugging‖ in the setting when upgrading
firmware.
5. When you finish the driver installation, you can come back to upgrading
procedures.
Troubleshooting
1. Can not turn on the tablet
Check the tablet‘s power level; please charge it before starting it. In case your
tablet still cannot be turned on, you may try to reset it
2. No sound from earphone
Check if volume is set to ‗0‘. Or earphone may be broken, please change for
another one.
3. Big noise
Check if there is dust in the earphone or speaker. Check if the file is broken.
4. Screen drift or unresponsive screen
To pin the reset button to reset your tablet and power it on again.
5. Application not workable
Possible reasons may be that this app is not compatible with your OS or the
downloaded .apk file is broken so you may need to download a full version.