You can download it here at Sony.
Benefits and Improvements from the latest update
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- Enables the “External Flash Set” function with compatible Interchangeable Lens Cameras
NOTE: This function is only supported when the wireless radio commander is attached directly to the camera, and cannot be used when shooting off-camera flash with a cable.
See the the “External Flash Set” function instruction video for more information.
- Enables the “External Flash Set” function with compatible Interchangeable Lens Cameras
Compatible camera models: