I've got a Canon IXUS 870 IS (beta firmware is available) while trying to install CHDK on a Sandisk 1GB SD card, all I get is the camera not switching on putting me into a situation where the only solution is removing the batteries and restarting.
I've tried with the lock tab up and down on the physical card, nothing works, absolutely nothing, and it turns quite frustrating as I would love to get this software running on it.
Any help will be extremely appreciated.
Thanks in advance and keep up the good work!