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Shouldn't make a difference I wouldn't think but I was recommended to use the XI 9 1521 transducer for my unit.
Is your unit a gen 2 helix? That has chirp and the transducer you mention is the correct one for a gen 2 unit. To the OP, looks like your unit is a first generation helix. That does not have chirp. The XI 9-20 transducer you have, is correct. Unfortunately, the last update for your first generation helix is 1.9. They fizzled those units out after that. So 2.1 is not available for your unit and unfortunately, neither is ice mode. I May be wrong, if I were you I’d call Humminbird and ask them to be sure.
If you are not using any ice fishing mode, then I'd start by making sure you're in the advanced options in the setup tab. I'd use the clear mode in water less than about 12' and max mode in deeper water. I think you have "jigging mode" on that unit and software version; I'd turn it on. Depending on your jig size, I'd adjust sensitivity until it is clearly visible but not big and fuzzy; that will vary with depth and jig size. Contrast in the middle of the range to start. Turn off the auto depth and set it manually to a couple of feet deeper than you're currently in. Easy to change if you hole hop, too. If fish are deep or near bottom, while open water fishing I've set the upper limit to 3-4 feet since I never seem to catch anything there. This gives better detail to the rest of the water column.
So went to set it up and in my settings there is no advance mode , I have custom and angler no jigging modeIs it the new update? I did see them in the past .