Linkit ONE to Arduino IDE 1.8

I tried to install Linkit ONE board to Arduino IDE 1.8 (Windows 10) without success. (Using file and method for adding board).
Link is not available:

I got this error message:
Error downloading

Can somebody help me with a step-by step instruction?

Yes i have the same problem, Mediatek moved the .json file that installs the bords i have the Linkit 9676 or whatever the number is… we need this restored