Sony has recently released a new firmware for the Sony A7R Mark II allowing, among other things, the possibility of working together with the recently introduced lighting control system by radio control from Sony.
This version 3.30 also improves the stability of the photographic camera for improving the regulation of the internal temperature.
These are the download links to the update instructions:
If the firmware update fails, the camera may stop functioning properly. Read the instructions carefully.
When updating the firmware, always use a fully charged battery. Do not turn off the camera or use any of the controls of the same while the firmware is being overwritten.
Once it has been updated firmware, the previous version can not be recovered.