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Windows Fastboot for MediaTek X20 - 96Boards

Windows Host

This section show how to install the Android operating system to your MediaTek X20 using the fastboot method on a Windows host computer.

  • Step 1: Download and untar/unzip all necessary files
  • Step 2: Make sure “fastboot” and “adb” are set up on you Windows host machine
  • Step 3: Prepare MediaTek X20 development board
  • Step 4: Boot MediaTek X20 development board into Fastboot mode
  • Step 5: Install Operating System update using downloaded files(images)

Step 1: Download and untar/unzip all necessary files

Tarball Option Description
mediatek-x20-aosp-16.10-image.tar.xz Download This is an “Image only” tarball, here you will find all pre-built images needed for OS installation
mediatek-x20-aosp-16.10-source.tar.xz Download This download includes source files for building images
mediatek-x20-aosp-16.10.tar.xz Download This download includes all of the above files, both pre-built images and source

Visit builds.96boards.org for more information on downloads.

Step 2: Make sure “fastboot” and “adb” are set up on you Windows host machine

  • Android SDK “Tools only” for Windows can be downloaded here
  • The Windows “Tools Only” SDK download does not come with fastboot, you will need to use the Android SDK Manager to install platform-tools.
  • To do this follow the “SDK Readme.txt” instructions included in your SDK “Tools Only” download.

If you are still having trouble setting up fastboot and adb, click here for a short tutorial video

Step 3: Prepare MediaTek X20 development board

Before flashing the new Operating System files onto a MediaTek X20 development board, you must first ensure a successful stock Android boot. For this step you must have adb (Android Debug Bridge) successfully setup on your Windows host machine.

  • Connect the HDMI cable to the MediaTek X20 Development Board connector (marked CON6501) and to the LCD Monitor (Optional)
  • Set the the third pin (USB HOST SET) of switch SW3205 to the position OFF position and connect the micro-usb to the host machine.
  • Plug the power supply into the power outlet
  • Press down the button (marked SW3201), and keep more than 3 seconds, the Android system will start
  • Verify your MediaTek X20 board is detected using adb with the following command:
$ adb devices

Once you have ensured the board is detected by your Windows host machine using adb, proceed to the next step. If you are experiencing issues with this step you may want to:

  1. Troubleshoot the adb setup on your host machine (Step 2)
  2. Attempt a Board Recovery
  3. Visit the MediaTek X20 Troubleshooting Page

Step 4: Boot MediaTek X20 development board into Fastboot mode

Using adb, the MediaTek X20 can be easily booted into fastboot mode with the following command:

$ adb reboot bootloader

To ensure the MediaTek X20 development board is in fact booted into fastboot mode, execute the following command:

$ fastboot devices

Once you have ensured the board is detected by your Windows host machine using fastboot, proceed to the next step. If you are experiencing issues with this step you may want to:

  1. Troubleshoot the fastboot setup on your host machine (Step 2)
  2. Attempt a Board Recovery
  3. Visit the MediaTek X20 Troubleshooting Page

Step 5: Install Operating System update using downloaded files(images) and reboot

Please re-visit Step 1 if you have not already downloaded the appropriate MediaTek X20 operating system images.

Executing the following commands from your command line while within the appropriate directory, will flash each individual component to your MediaTek X20 development board. Once you have done this, the fastboot reboot command will reboot your board into your newly installed operating system.

fastboot flash preloader preloader_amt6797_64_open.bin
fastboot flash recovery recovery.img
fastboot flash scp1 tinysys-scp.bin
fastboot flash scp2 tinysys-scp.bin
fastboot flash lk lk.bin
fastboot flash lk2 lk.bin
fastboot flash boot boot.img
fastboot flash logo logo.bin
fastboot flash tee1 trustzone.bin
fastboot flash tee2 trustzone.bin
fastboot flash system system.img
fastboot flash cache cache.img
fastboot flash userdata userdata.img
fastboot reboot

Congratulations! You are now booting your newly installed OS directly from eMMC on the MediaTek X20!

Windows Host - OLD

This section show how to install a new operating system to your Helio X20 using the fastboot method on a Windows host computer.

Necessary Condition

You need prepare 6 components:

Flash Tool access path

From code source : alps\vendor\mediatek\proprietary\system\core\xflash You can also get it from the link above.

How to build special images

Execute following commands, build system will automatically create FES folder and come out the special lk.bin, where FES store the needed files for xflash download to target befor entering fastboot mode.

$ source build/envsetup.sh

$ lunch full_amt6797_64_open-eng

$ make -j16 PLATFORM_FASTBOOT_EMPTY_STORAGE=yes -k 2>&1 | tee build.log

Then, you can find a folder named FES.

PATH: \out\target\product\amt6797_64_open\FES

Prepare your Windows host machine

  • A Windows PC host
    • ADB and ADB driver need installed in this windows PC, thus, we can send adb command by it.
  • Normal load(Include image files and scatter file etc.)
    • You can put it in anywhere, eg, \xflash\bin\win\img
  • Special images and scatter file
    • You can put it in anywhere, eg, \xflash\bin\win\FES.
    • How to build it? Please see “How to build special images”.
  • fastboot.exe
    • you can put it in normal load folder.
  • fastboot command script file
    • Written by yourself, you should put it in normal load folder.

Windows Download

Step 1. Make a device to enter fastboot mode

  • Prepare special images and corresponding scatter file.

  • Run program in command line mode like this:

    xflash.exe enter-fastboot “G:\xflash\bin\win\FES\MT6797_Android_scatter.txt”

  • Then plug in USB cable to device without power adapter.
  • Plug in power adapter then
  • Xflash will scan and open device COM port and connect it, download some necessary images to devices, then make device to enter fastboot mode.

Step 2. Run fastboot command script file

  • You need write a download script.

      Such as xflash.bat

  fastboot devices
  fastboot flash preloader preloader_amt6797_64_open.bin
  fastboot flash recovery recovery.img
  fastboot flash scp1 tinysys-scp.bin
  fastboot flash scp2 tinysys-scp.bin
  fastboot flash lk lk.bin
  fastboot flash lk2 lk.bin
  fastboot flash boot boot.img
  fastboot flash logo logo.bin
  fastboot flash tee1 trustzone.bin
  fastboot flash tee2 trustzone.bin
  fastboot flash system system.img
  fastboot flash cache cache.img
  fastboot flash userdata userdata.img
  fastboot reboot

  • Run the download script, download success.