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Can you take your head unit off and update in the house. U got that battery system in your house. Like when you helped me that one timeYour welcome. Fat32 is the format for the reformating the SDHC card. I just downloaded the file from humminbird off my user page and put it on a newly formated SDHC card. I was able to use this card to successfully update my 898 C SI unit to the 6.180 software version.
It took me a while to figure out how to turn off the text numbers on the left side of the screen. You have to use the sonar menu to turn them off. If I had not watched a U tube video on how to do this I would not have figured it out. Still it took me a while to get this figured out.
I pushed the boat out of the garage so that I could reach the control head and take out the old SDHC map and SDHC card for my waypoints etc and then put the current software back into default settings. I turn the unit off and installed the new SDHC card with the new software on it and turn the control head back on. I answered the two questions and went to get a cup of coffee and let the unit update itself. It took a few minutes to complete but all went well from what I can see for now. Man it's cold out there . My fingers were getting numb trying to go though the menus to figure out all the new things. I had to come back inside and warm up. And it's only 45 deg F out there. It feels better in the house where it's a nice balmy 76 deg F. LOL
