I just wanted to pass along an update that came out yesterday.
Anyone with a mark 4 hdi, elite 4 hdi, elite 5 hdi, elite 5 CHIRP, elite 7 hdi, or elite 7 CHIRP, you should check out the update.
Better mapping options, sonar log enhancements, and general software and performance improvements.
This is the link to the update
http://www.lowrance.com/en-US/Softwa...ates/Elite-40/