There is no fix PERIOD!!! If there is a fix, it will have to come from someone whose willing to write a software update that will fix the communication issues between the two, independent of both manufacturers. Both Motorguide/Mercury and Navico/Lowrance are aware of the problem and have no fix as I confirmed over the phone with both and many others have confirmed by receiving either an email or letter in the mail. Even though both will say they're working on it, I can 100% guarantee you no solution will be produced and there is no incentive, financially, for them to do so. It sucks for those of us that spent the money to pay for the components necessary to link the two, but this is reality. I have searched, searched, searched and searched for a solution for over a year now and none can be found. I've been in contact with numerous people who have the same issue, compared notes, tried different settings, and none of them work. This is a dead horse and I'm tired of beating it.