Problem with Arduino MKR1000 on my Macbook Pro

hi guys:
I have a problem on using Arduino 1.6.10 IDE with Arduino MKR1000. I can find the Arduino MKR1000 on the board and the port. When I am trying to upload the blink example to it. It shows me this message.

/Applications/ -dump-prefs -logger=machine -hardware "/Applications/" -hardware "/Users/MikeLo/Library/Arduino15/packages" -tools "/Applications/" -tools "/Applications/" -tools "/Users/MikeLo/Library/Arduino15/packages" -built-in-libraries "/Applications/" -libraries "/Users/MikeLo/Documents/Arduino/libraries" -fqbn=arduino:samd:mkr1000 -vid-pid=0X2341_0X804E -ide-version=10610 -build-path "/var/folders/_n/0t1_bg117lj9krbtsfxy010m0000gn/T/buildd5ae82e677127ac286f51de66781d807.tmp" -warnings=none -prefs=build.warn_data_percentage=75 -verbose "/var/folders/_n/0t1_bg117lj9krbtsfxy010m0000gn/T/arduino_modified_sketch_531354/Blink.ino"

Board mkr1000 (platform samd, package arduino) is unknown

Error compiling for board Arduino/Genuino MKR1000.

Does anyone know the solution for this problem?

Did you follow the instructions in the MKR forum section for installing the boards JSON and do the updates ?

Did you do the boards UPDATE via board manager

Should be :-

Arduino SAMD Boards (32 bits ARM Cortex-M0) 1.6.6 - MKR1000 1.6.4-mkr02

Libs update for WiFi101 via sketches, include libraries :-
WiFi101 0.9.1

There may be newer ones but these are stable.

no worry. I have already figure out the solution this evening. Thank you so much.