Connect the tablet to a PC. You will likely need specific RockChip drivers for your computer to recognize the device in "AN7BG3" or similar recovery modes.
10.1-inch capacitive touchscreen (1024 x 600 resolution) Default OS: Android 4.0 (Ice Cream Sandwich) Why Flash an Arnova 10d G3 Firmware ROM? Arnova 10d G3 Firmware Rom
If you are on the stock firmware and want to gain root access: Connect the tablet to a PC