I have owned an Amplifi 75 for years and years and I haven't had any issues that I've seen on this forum. I use it as a Bluetooth boombox basically at parties and I play my guitars on it in the living room when not blasting through my stack in the garage. I use the app to browse and mess with tones and it really is great despite what everybody says. I really feel bad for people who have had issues because I really enjoy it. I have had a good time with it and it's lasted years. But I do have a question if someone would be so inclined to answer it. Today I bought a second one for my buddy who has been eyeballing mine for years. I brought it home after picking it up and cleaned it up and I looked through the app to see all these firmware updates that I never did even on my own unit. You can see that there were a handful of updates over the years. So my question is.. Do I have to download each one of those updates or will the newest 2.60 (I believe) take care of all of them?