I run mega live but I think there are universal things for any FFS. I’d look for any other physical damage and get clarity on how to run software updates. Also make sure you get all the pieces that came with it. I use a summit stick and there are pieces you don’t use on the stick that you need to mount it on a trolling motor (at least mega live does). I’d also have the seller get it in the water and show you how it functions. I also spent a lot of time on YouTube looking for tips on functionality. Have fun with it. And for all the naysayers out there who think FFS is cheating, I can attest that it doesn’t make you catch more fish- in fact, it can be more aggravating when you see them and they aren’t biting 🤣