Check your Humminbird accounts. New updates are ready for download. 2/23/2009 12:00:00 AM - v4.510 Supports the XM NavWeather accessory. Adds new 2D sonar processing techniques, including the ablity to turn off TVG. Adds SI Image Enhancement features. Supports operation of the CannonLink accessory across an InterLink accessory. Modifies the Depth Offset menu item to shift the sonar image, not just the digital depth. Expands Water Type selections to include deep and shallow salt water. Adds Waypoint Decluttering control. Adds Demonstration mode menu item to disable point-of-sale mode when using a transducer with no thermistor. Reduces interbeam interference. Fixes the color of shoreline construction on Navionics charts. Resolves MMC (not SD) access problems.