Transpeed 8K618-T

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Transpeed 8K618-T
Transpeed 8k front.jpg
Manufacturer Transpeed?
Dimensions 100mm x 100mm x 22mm
Release Date 2023
Website unknown
SoC H618 @ 1.5 Ghz
DRAM 2GiB/4GiB DDR3L @ 648 MHz (8 * Micron MT41K1G4)
eMMC 16/32/64/128 GiB eMMC 5.1
Power DC 5V @ 2A
Video HDMI (Type A - full), CVBS
Audio 3.5mm headphone plug, HDMI
Network WiFi (HK2735M), 100Mbps Ethernet (integrated H616 PHY)
Storage µSD, eMMC
USB 2 X USB2.0 Host
Headers UART header pads

Cheap TV box, an example of various very similar devices, shipped under different names.


On the back of the device, the following is printed:

MODEL: 8K618-T    RAM: 4GB
DC IN: 5V         ROM: 64GB

The PCB has the following silkscreened on it:


In android, under Settings->About Tablet, you will find:

  • Model Number: 8K618-T
  • Android TV OS version: 12
  • Android TV OS build: SP1A.211105.004

Sunxi support

Current status

Many features are already supported by the mainline kernel (eMMC, SD card, USB, WiFi), though video, audio and Ethernet (PHY) are missing, for the H616/H618 in general. Just needs the DTB to run on mainline builds since Linux v6.5 (required for the AXP313a PMIC support).

Manual build

You can build things for yourself by following our Manual build howto and by choosing from the configurations available below.

Mainline U-Boot

Use the transpeed-8k618-t_defconfig build target. Available since v2024.04-rc1.

Mainline Linux Kernel

Use the sun50i-h618-transpeed-8k618-t.dtb devicetree binary from a mainline kernel, available since v6.8-rc1. Requires at least v6.5 for the AXP PMIC support.

Tips, Tricks, Caveats

FEL mode

There is a FEL button on the PCB (behind the AV socket), it can be reached by a non-conductive tool like a toothpick through the AV socket. Alternatively, enter FEL mode with the fel-sdboot.sunxi image written to an SD card.

The USB socket next to the SD card is connected to USB controller 0, a non-standard USB A-to-A cable can be used to connect using FEL.

Adding a serial port (voids warranty)

Transpeed 8K618-T UART pads

Device disassembly

Use a Plastic tool to move around the lid on the top, to pop open three brackets at the front and the back of the device.

Locating the UART

The UART pins are clearly marked with RX, TX, GND on three easy to solder pins on the PCB.


Also known as

Probably very similar, if not identical to other H618 TV boxes, especially those with a display at the front, the two USB sockets on the side, and no SPDIF socket.

With the H618 being designed for TV boxes, there are not many variations to come up with for a cheap design. The AXP313 PMIC used in those boxes (with the H618 SoC) has really little wiggle room for customisation, so all rails need to be enabled all the time, and the voltages are pretty fixed, for practical purposes. There could be variations in the WiFi chip, and in the DRAM chips used, although cost pressure probably leads to DDR3 DRAM chips being used.

See also

Manufacturer images