If you're on a Mac computer and want to update your XW to the latest firmware, please take note. Apple's GateKeeper security will claim the the firmware updater file is corrupt. You have to disable this feature before downloading the file from the Casio website. After you've done the firmware update you can return the Gatekeeper back to it's default setting. For more information on Gatekeeper, please see this article. http://support.apple.com/kb/ht5290