Eyefi X2 - MAC address and upload key retrieval (even if you don't have an existing settings.xml) Step 1 -You need to run the Linux program eyefi-config-eyefi-config-013.zip to get your MAC address and upload key. You need to run the make command to compile the eyefi-config program - more details on how to run the Linux part in this Youtube video I made: https://www.youtube.com/watch?v=VB3eQsa7zQs Step 2. You then can run the 2 commands to get your MAC address and upload key: ./eyeficonfig -m ./eyeficonfig -u Step 3. Then you can use the following settings.xml and replace the MAC address and upload key with the once you get from the Linux program . Ensure for the MAC address use dashes instead of the colons that the Linux program returns. Running Eyefi X2 Utility Step 4. Install the Eyefi X2 utility v1.1.1.0 which is the updated one : eyefix2utility.zip run it and then close it entirely (task manager kill task so it's not running