Hi,

New user but experienced with Arduino.

I'm getting the above error (or in full http://www.M5Stack.com/download/package_m5stack_index.json file signature verification failed. File ignored) when trying to get started having added the URL as per the littlepaper booklet to the list of boards.

Is this a know issue. I have other unrelated boards added no problem.

using M5 Basic.

thanks

Steve