I've just loaded the 101b and yeeaaahhh! It's working!!! Thank you all very very much for the good and fast work!!!
I'm completely new to chdk, so you know what I'll be doing the next few days

Just to confirm: RAW files are working fine. I'm using the latest version of DNG4PS-2 to convert them to DNG and the outcome can be opened with Photoshop without any problems. DNG4PS is using the A720IS profile which seems to be compatible. However, I'm not an expert in handling RAW files and I may be wrong when saying that it's working fine, but hey, I'm so happy, I've shoot my first usable RAW files

Keep up the good work!