Yones Toptech BD1078

= Identification =

The PCB has the following silkscreened on it: YONESTOPTECH-BD1078-20131105

In Android, under Settings->About Tablet, you will find:
 * Model Number: AX105
 * Build Number: wing_bd1078-eng 4.2.2 JDQ39 20140307 test-keys

= Sunxi support =

Current status
The device is supported and maintained in mainline U-Boot. There is no mainstream kernel support at this point.

Some features are missing on Linux (sunxi-3.4 branch):
 * USB OTG doesn't work on the external connector (common to all sun7i devices) and it doesn't seem to work in either host or device mode
 * Wi-Fi and Bluetooth are untested

Mainline U-Boot
For building mainline U-Boot, use the Yones_Toptech_BD1078 target.

Manual build

 * For building u-boot, use the Yones_Toptech_BD1078 target.
 * The .fex file can be found in sunxi-boards as yones_toptech_bd1078.fex

Everything else is the same as the manual build howto.

= Tips, Tricks, Caveats =

FEL mode
Any button (VOL-, VOL+, BACK) triggers FEL mode from boot1.

Sending '2' over UART at boot triggers FEL mode from boot1.

USB storage mode
Sending '1' over UART at boot triggers an USB storage mode that exposes the nanda partition as well as the Android external storage.

Reset button
The reset button (on the side of the device) reboots the device.

Internal µSD card
The device has an internal µSD card port that shows as mmcblk1. This port doesn't have boot priority over NAND.

= Adding a serial port (voids warranty) =



Device disassembly
In order to open the device, there are two Phillips screws to remove from the side with the connectors. The pins from the white part are easy to pop but it is advised to use a a plastic tool, starting from the side with the connectors. The front panel is very fragile and pressuring the screen to pop open the pins can easily end up in breaking the touch screen panel.

Locating the UART
The UART pads are located on the back of the PCB. There is a plastic film that protects the back of the board from shorting with the back of the LCD panel. The pads are clearly labeled on the PCB: GND, Rx, Tx. It is advised to put the plastic film back after soldering connectors according to the UART howto.

= Pictures =

= Also known as =


 * V10Pro

= See also =


 * Inet k100c: Same case, different board.

Manufacturer images

 * BD1078 FW