How To Upgrade Firmware On Your Tablet PC（This firmware is for A9 Tablet PC to upgrade.）Instruction:
1. Format a SD card.
2. Unzip the attachment.
3. Copy the four fires in the attachment to the SD card.
4. Turn off the tablet and connect it to the power.
5. Plug the card into it.
6. Press and hold the round HOME key. Don't release it until the screen turns light. It will get dark again, pls wait with patience and don't plug out the card or cut off the power during the processing.
7. After about 3 minutes, pls press the power button to start the tablet and don't plug the card out.
8.If it can get access to the system, that means you manage to flash it. If not, pls try again.
A power failure during the firmware writing operation may disable the tablet PC.
* Use a fully charged Battery or dedicated AC Adapter for the firmware update.
* Do not shut off the power during the firmware writing operation.