One of the cool things about buying Eye-Fi at the Photojojo Store is that we sell a Compact Flash to SD adapter with firmware especially tailored for the Eye-Fi. This means you get super-speedy Wi-Fi speeds in your CF camera.
Occasionally, we hear of customers who have problems using Eye-Fi with the CF adapter and their Canon 20D, 30D, or 40D, and in talking with several of them, we’ve determined that the problem often occurs when the camera is running an older firmware that doesn’t deal as well with SDHC cards, like the Eye-Fi.
When you see a CF error in a Canon, the first thing we recommend is people try formatting the Eye-Fi in their camera.
This only erases photos, and doesn’t touch the part of the Eye-Fi that’s responsible for its Wi-Fi smarts.
If that doesn’t work, it’s worth trying a firmware update. Reader Matt Beller was kind enough to send us a list of the steps he used recently to get an Eye-Fi plus adapter working with his camera:
First I checked my firmware on my Canon 30D.. I was one behind.. My camera was running 1.0.5 and I downloaded 1.0.6 from canon.
After the camera was updated I put the Eye-Fi in the card adapter and put it in my 30D camera.. I still got the CF error. So I tried formatting in the camera and that corrected the CF error. I could take pictures with it.
I put the Eye-Fi card in the USB reader and plugged it into my computer and the Eye Fi manager was able to initialize the card again and restore the wireless settings.
The card now works both in my SD550 and my 30D.
Hope that’s helpful to some of ya! Also worth noting: If you ever need the Eye-Fi desktop software that came with your Eye-Fi, you can download the most recent Eye-Fi software here.