If you are waiting for OS X Mavericks 10.9.2, then you can now test the 2nd beta version of this firmware.There are no known issues in this firmware. You must be a developer to download and install the 2nd beta version of OS X Mavericks 10.9.2 on your device. Developers are being asked to focus their testing on six areas such as Messages, VoiceOver, VPN, Mail, SMB2 and Graphics Drivers. The most important thing is that you will be able to block iMessage and FaceTime users on your Mac after installing this update. It comes with a build number 13C39.
You will need to have a developer account to download OS X Mavericks 10.9.2 Build 13C39 as it is available only for registered developers. You have to pay yearly fees for developer account. If you are not a developer, then you will have to wait until the release of OS X Mavericks 10.9.2. Don’t forget to save all your important data before upgrading your device to the 2nd beta version. If you are planning to test OS X Mavericks 10.9.2 Build 13C39, then you have to go to the Mac Developer Center. This is really a great news for the developers who are waiting for it. This firmware is not recommended for all Mac users. The Cupertino company has recently released the 1st beta version of OS X Mavericks 10.9.2. It allows users to enjoy FaceTime Audio feature on their Mac.
If you are planning to enjoy all features of the new firmware on your device, then you should avoid installing OS X Mavericks 10.9.2 Build 13C39. You must wait until the release of its final version. You may be able to download OS X Mavericks 10.9.2 after few months. It will be available in the Mac App Store. You will be able to enjoy several new features on your device after installing it.