Oh man, you just saved so much time. I just updated to firmware 3.0 and thought that was the cause, so was about to waste a bunch of time on a red herring.
Thank you, thank you, thank you!
Here are some words of wisdom from another Forum:
Updating Firmware involves making a physical change to the relevant chip: a Programmable ROM. Once the change has been made it cannot be reversed except perhaps in the factory where, almost certainly, it will be easier and cheaper to simply replace the chip. By the same reasoning, if an update fails, then it will be almost impossible to reload the update as the failure may not be a simple omission, but an erroneous irreversible change.
FW updates are a major modification to your camera. This is why the maker's emphasize that you should start with a freshly charged battery as any interruption to the process could be fatal! It is also important to know that a FW update cannot be used to make all the changes that so many photographers seem to want. Some camera functions would need a new chip altogether as modifying the original chip isn't practicable.
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