From Canon:
Canon WFT-E7 Wireless File Transmitter
Firmware Version 1.2.0 incorporates the following improvement:
Please note that an interface cable is required in order to update the WFT-E7 to Firmware Version 1.2.0.
Connection Requirements:
In order to connect the Canon WFT-E7 with the Canon EOS 5Ds / EOS 5Ds R the following items are needed:
Items | WFT-E7 |
Firmware Version installed | 1.2.0 or later |
Interface Cable" | IFC-150AB II or "IFC-40AB II" |
Firmware Version 2.0.0 incorporates the following fixes and improvements:
To update the firmware of this product, Canon’s Map Utility software that is bundled with GPS Receiver GP-E2 is required. Furthermore, before updating the firmware, use Map Utility to save any GPS log files in the GP-E2’s built-in memory to your computer. After the GPS log files are saved to your computer, make sure to delete the log files from the built-in memory of the GPS Receiver GP-E2 before updating the firmware.
Download: Firmware Version 2.0.0 for the GPS Receiver GP-E2
B&H carries the Canon WFT-E7 Wireless File Transmitter and GPS Receiver GP-E2.