RealView Debugger automatically unloads an image from a debug target when you:

However, you might want to unload an image explicitly as part of your debugging session, for example if you correct coding errors and then rebuild outside RealView Debugger.

You do not have to unload an image from a debug target before loading a new image for execution. Display the Select Local File to Load dialog box and make sure that the Replace Existing File(s) check box is selected.