Started the typical update process on a MacBook Air, plenty of resources available. and the process has stalled. It's been running for 9 hours overnight, and after a safe boot, and all recovery process, it's still stopped responding.

Hello Everyone, We've had an idea for a hardware controller for Logic X, and have already made prototypes that work with Garage Band and other applications. My question is - Does Apple have a development license available for Logic X? Thanks.