3
VIA SOM-9X50-STK Yocto 3.1 EVK Quick Start Guide
2.
Image Installation
This section explains the setup requirements for booting from the eMMC.
The precompiled images are provided in the "Firmware" folder.
2.1
Installing with the Fastboot Mode
The first step is to prepare the "fastboot tool" and install the "VIA USB driver" into your Windows 10 host
machine.
To get the "fastboot tool" for Windows, please refer to the "SDK Platform Tools release notes" chapter on the
Android developer website (
https://developer.android.com/studio/releases/platform-tools
).
To install the "VIA USB driver", right-click on the mouse button to install the "android_winusb". When finished,
it will show "The operation completed successfully".
Then connect the Windows 10 host machine and the VIA SOM-9X50-STK through the Micro USB 2.0 port using
the Micro USB cable.
Micro USB 2.0 port diagram
Next, on the VIA SOM-9X50-STK, set the two OS image jumpers (J7 and J5) to download mode as shown in the
diagram below.
OS image jumpers diagram
J5 and J7 Settings
Pin 1
Pin 2
Pin 3
Normal mode (default)
Open
Short
Short
Download mode
Short
Short
Open
OS image jumper settings
Plug in the AC-to-DC power adapter to power on the VIA SOM-9X50-STK.
The VIA SOM-9X50-STK will stop at "fastboot: processing commands" as shown in the debug console below.
Fastboot Mode
Note:
Make sure the Windows 10 host machine detects the VIA SOM-9X50-STK as an Android device.
