Quote Originally Posted by mrdux View Post
Many of the HB units like my 898 will not run the Platinum.
mrdux,
You may want to check with the Humminbird Customer Resource Center folks about that. As far as I know the 898 units have always been Navionics Platinum and Platinum+ capable. The 899ci HD Si units were not to begin with but that was changed with upgrading the software.