I bought an old SD400 with the intention of sending it up on a high-altitude balloon this weekend doing time-lapse photos. Unfortunately, now that it's arrived, it has 101c firmware on it, and the 101b firmware just hangs (unsurprisingly, I guess). Does anyone happen to have a 101c version squirreled away somewhere, or, alternatively, a way to downgrade to 101b?
The camera is old enough that the serial number has worn away, so I can't download the upgrader from the Canon site to see if it allows downgrades.
