Earlier today I came across this post on PocketBerry ”Capture It! for BlackBerry OTA link gone, How do you screen capture?” Well I was able to locate the files needed for the OTA. CaptureIt is a a very popular screen capture application for BlackBerry. You could get it officially from m.thetechmogul.com but the site appears to be suspended now.
Here is the link for CaptureIt v1.4 OTA