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Good Stuff,Yes there is a new updated version of the original 4.0 software.From what Lowrance is telling me is that some unit's had problem's with the original 4.0 but some did not.The one I have downloaded now is 4.0.36.59
On your unit, you can go to the system tab, highlight about,then enter, should display your firmware revision number.
Member BS Pro-Staff and Billbob Pro-Staff
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My unit says I have software # 4.0.36.56. So I assume I have the old software...right?