HYH-TBH3

= Identification =

On the back of the device, the following is printed: Smart Android Box

The PCB has the following silkscreened on it: W-SF 20141206-H3-V1.0 2015-01-15

In android, under Settings->About Tablet, you will find:
 * Model Number: zhx
 * Build Number: dolphin_fvd_p1-eng 4.4.2 KOT49H 20150323 test-keys

= Sunxi support =

Current status
Unsupported

Manual build

 * For building U-Boot, use the  target.
 * The .fex file can be found in sunxi-boards as hyh-tbh3.fex

Everything else is the same as the manual build howto.

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

Mainline kernel
Use the  device-tree file for the mainline kernel.

= Tips, Tricks, Caveats =

FEL mode
Make sure that your device is truly powered off. Do not leave any cables attached. Attach The UART cable and launch your serial console. Now in the same time you attach the Power cable and you send the character '2' to the device during power-up. When in fel mode you should see eraly jump fel on screen. Now you can attach a USB-cable to the USB port near the micro SD slot.

To verify you have successfully entered FEL mode, check the output of. For the Hyh-tbh3, it should look like: AWUSBFEX soc=00001680(H3) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000

DRAM clock speed limit
DRAM is clocked at 672 MHz by the hardware vendor. But the reliability still needs to be verified. One of the ways of doing reliability tests may be https://github.com/ssvb/lima-memtester/releases/tag/20151207-orange-pi-pc-fel-test (it checks the Orange Pi PC DRAM setup in the current mainline U-Boot v2016.01-rc2 + a bugfix).

NOTE: While this test image was made for the Orange Pi PC, it also runs on the Orange Pi Plus.

See the Orange Pi PC DRAM clock speed limit for how to perform an analysis of these results.

= Adding a serial port (voids warranty) =



Device disassembly
Remove the four rubber feet on the bottom and unscrew the four micro screws, see

Locating the UART
UART pads are located between the USB port and the A/V CVBS output jack UART howto.

= Pictures =

= Also known as =

Toosin vmade OEM H3 Xgody AT-756D CN_H3 TVPP0030 (no SPDIF) TVPP0042 = See also =


 * H3_Manual_build_howto