Zenithink C93 (10.1"+8GB) Android4.1 2013-06-26.
This version suits to C93 model with barcode C93S-xxx-8GB-ZNSxxx-xx.
Using TF card
First extract the firmware which you get or download, then copy the whole "zt-update" directory into the root directory of TF card.
Put the TF card into TF card slot, then press the "Back" button at the same time to press the power-on button, then operate as per the reminders shown on the screen, the machine will be installed the firmware and then reboot.
Note: keep charged when the machine is being installed the firmware. Please hold the "Back" and Power-on button for at least 5 seconds.
