Stay with me…this might get long and my thoughts could jump a bit. 
Can I update the maps that came with my Lowrance HDS7 Gen 2 Touch and HDS5 Gen 2 (non-touch)? When on the same body of water (Mississippi river), the HDS 7 shows me wingdams, contours, depth, etc…, but the HDS 5 just shows water. No depths, no wingdams. While on the Bay of Green Bay, I did see contours, underwater hazards, etc… on both (the 7 showed just a bit more details, but…).
If both units are Gen 2, why do I not get the same Lowrance map embedded on each? With both being smaller screens, I only get one SD slot with each. I want my blank card inserted so I can log if I want, but cannot do that by purchasing a map card and inserting it into my only slot. Still with me? Good.
I do understand that I can network the two together and essentially share a map chip between the two and log on the other unit, but I don’t want to get that complicated just yet (I also have the Xi5 that I eventually will network in, but not sure exactly how I am going to utilize the two HDS units. I do a lot of different fishing from trolling Lake MI, to casting from the bow so where to put the HDS 5 is undecided. I thought possibly moving from console to bow depending on fish targeted, but we’ll see).
To simplify for now, can I just update the map that came preinstalled on my HDS 5/7 units? If yes, how?
