wow i'm glad for the chdk advances for a550!
I'm not sure that what you want is USB remote features...
why is it very important for you?! ...if can i ask.
I've reading, and the posts talks about a remote control to take the pictures, and thats great, but I want to connect my cam to my pc, let it take pictures, and save it on hard disk
automatically. That's the other half of my problem
There's not problem to shot the pictures by script, my dream is to save it on hard disk.
reading more on the forum, i've just realized that the solution for what I want is that some software (cam4you, psremote, etc) detect the a550, and take control over it, remote shooting by software and downloading the images to pc
but it seems it doesn't have implemented yet to a550.. or I'm wrong?