Quote Originally Posted by Shellback View Post
Don't know for sure, but if you go to the humminbird site and register your unit, it will list any updates that are available for it.
I have a couple of elderly friends that never used a GPS system. The wanted something in this price range & I helped them get them & set them up. They really like the units and they have increased their fishing success. I have all my "upgradeable" units registered & check for updates all the time. I'm just not sure if you can upgrade the software on a 580. If you can I would like to do that for them.