It appears to be a certificate issue and Java will not allow it to connect to the site to check for software. My gimbal is currently dead in the water until I can check for an upgrade or manually get a firmware file.
Hi, I'm using 2.50b3 and still get an java error while checking latest version: 'Error checking latets version: java.lang.exception: this device is not activated. Please call support service for help.
And its not a problem with my computer, I've updated already to latest version 2 other 32Bit AlexMos boards with my computer. I also tried with a different computer. I bought the board at Flyduino.