What radio, 8.4? Mine just did an Over The Air download yesterday. It asked if I wanted to do the update or schedule it later. I chose to do it. About a half an hour later it was done.
Initially I was missing about 3 Icons on the uconnect. Also, like you, all my presets for Siriusxm were wrong. But my Favorites were still popping up.
So today I think I figured it out. First all the icons came back on it's own. Second, to keep all your presets you must reset the Memory seat button. I used Memory recall #1 by starting the truck and setting your presets, mirrors, seat, ect, then press the S button then press 1 button. It should give you a memory set message on the EVIC in the dash.
The other crazy thing is the trucks Hotspot stopped working around July last year. I confirmed I now have the Hotspot back. I'm NOT complaining!!