Here I write down the way to change the language of foxwell BT100 12V car battery tester.
Change Foxwell BT100 language in Video Demo: https://mega.nz/#!7xYiUIwK!lqDoAvOLpVbxwT1d1cUWsmfBx6o7oiipvfDYleuqFeY
Procedure in text:
When you start the FOXWELL BT100, it will show the FOXWELL LOGO on the screen.
Then click the up button. It will show you the language menu like the picture bellow:
Finally: to choose the language you want!