Hello,
I am looking to buy a point-and-shoot camera, and I would like (other things being equal) to be able to load CHDK onto it. I'm very willing to buy a slightly older model to be able to use a stable release and not have to use up a developer's time to port it. For example, I've looked at the ELPH330 (which has been superseded by the ELPH340) and the SX260 (which has been superseded by the SX280), for which the number of new features added is not enough for compensate for the lack of a port for those cameras.
However, I have a slight concern, and that is that even if I buy a slightly older model, that it will have newer firmware and therefore won't work. Like if the ELPH330s sold now actually had ELPH340 firmware on them. I doubt this would be the case, since it would likely be harder for Canon to sell the newer models if people could just buy the older models with the same firmware (and therefore software features). But before I make the purchase I just wanted to ask if anyone here has come across problems with that.