After being announced in September, Sony has released a highly anticipated firmware update for the α7R II. The new firmware, version 2.0, is for download through Sony’s e-support site using the links below. In addition to uncompressed RAW capture, which will become a selectable feature (uncompressed/compressed RAW) within the menu system for updated cameras, the firmware also adds the ability for the α7R II to output video via HDMI during use of the Remote Camera Control software, that enables remote capture from a connected computer.
You can download the firmware using the following links:
Sony Artisan, Brian Smith, also put together a comprehensive article to help ensure a smooth upgrade experience. You can read it here.