Reviving this comment based on what just happened to mine. The dreaded "Charging is not supported for this device" message started showing up more frequently and finally became permanent this week, no matter what I did. Wiggle, clean connectors, etc. I was all set to get a new one, or the iDO, and figured I'd take it apart and see what was up. I wish I took photos, but it came apart pretty easily once the rubber bottom pad was carefully peeled off. There is a small plastic ribbon cable that snakes up to the connector board that is held in with a small disconnect/friction socket. There was corrosion on that contact surface. Cleaned it up, refastened the ribbon and set the clamp, and reassembled. Now it's rock solid and good as new. If others start experiencing this, it's worth a look at the ribbon cable inside and most likely not the external connector.
Edited by GrindingThud - 10/25/13 at 10:58am
My phones used to charge, now I get intermittent messages that "Charging is not supported for this device." It seems to have been with the last iOS update. Anyone have a similar experience, and if so know a workaround?