When will the HDD REC function be available on my Sony's Android TV?
This feature will be available before 24th December. However, due to the technical complexity implementing this feature, the final release date(s) stipulated on our support site may be subject to change.* To enable this service, we recommend that your TV is connected to the Internet.
Until then, the following message will be displayed on-screen if you try to record television broadcast using the REC function:
To use this feature, a system software update is required. For details, please refer to Reference Guide.
You can update your TV via the automatic software update or download the software manually on our Support website. For more information, take a look at the following article detailing how to perform Firmware/Software Updates for my Sony's Android TV.
NOTE: *HDD recording (REC) and Satellite features are not available if YouView functionality is enabled. YouView on Sony TVs will offer consumers a consistent and easy to use YouView experience, including scroll back, search, discover and catch up TV (BBC iPlayer, ITV Player, All 4 and Demand 5). YouView functionality includes access to all the normal free-to-air channels via the YouView guide and mini guide.
Link:
http://www.sony.co.uk/support/en/article/66487