I apologize if this has been discussed and if this is in the wrong forum. I'm wondering if a Lakemaster chip model: HPWIC3 can work with a 587ci, software version: 5.310? I notice now, after I already purchased a chip off of guy on craigslist that it is compatible with the 587ci HD. I tried the chip and it will say "loading charts" for about 1-2 seconds and then disappear never loading any charts. I'm wondering if anybody knows of a workaround that I could use. Any help would be appreciated. Thank you for looking.