It sounds like the main application is broken. The bootloader message "Press E4..." will timeout and attempt to start the application if you do not press E4 soon enough. It sounds like it is trying to start this application and failing, which resets the hardware and it starts over with bootloader. Did you follow the steps as outlined in this post to reprogram the original image?
Message Edited by mnorman on 2009-12-16 08:41 PM
Message Edited by mnorman on 2009-12-16 08:43 PM