Since downloading new software, the wife and I were really excited about using it. We went to the wrecks and couldn't pickup anything at all except a black screen on the SI and DI. I tried changing from deep saltwater to shallow saltwater. Left it on Automatic. Still no change.We were tying to fish anywher from 40-90 ft of water. I do however like the 3 pallettes. Any idea on what I need to do? The bottom structure looked good, but couldn't tell what they were. Thanks everyone,