King KORG Operating System Version 1.13 is now available. Release notes - Fixed a bug on possible damper off while holding damper pedal. - Some small bugs have been fixed and some operation have been improved. System requirements Windows: Windows 7 SP1 or later Mac: Mac OS X 10.9 Mavericks or later Notes The latest "KORG USB-MIDI Driver" needs to be installed before the update. If the driver installed on your computer is older than latest version, install the latest version of the driver before starting the update.(http://www.korg.com) How to install A document file is extracted after the decompression of the downloaded file(KingKORG_Updater_xxxx.zip). Please follow the instructions in the document.