Simple Tool for Installing CHDK (STICK)
for Windows, OSX and Linux (Ubuntu)
The 'Already Downloaded' Page
When a photo has been dropped, the STICK screen can look like this:
As you can see, STICK has identified the camera and Firmware information and is waiting for permission to download CHDK.
It has also found an already-downloaded build, presumably because such a build had been downloaded by STICK in the past. If you click the "Use it?" button it will bypass downloading and proceed to step 3 (Card Preparation)
If you want to download a fresh (possibly updated) build, then click the Download button. STICK will then download the zip files from the appropriate CHDK site and unzip them. This process may take a minute or so, depending on the speed of your computer and internet connection.
When the software has been downloaded, STICK will display the next screen.