I just got Deck a few days ago. At first I was trying to sync files (Minecraft worlds, Gamesaves etc) using Syncthing but my WiFi was too spotty for it to work consistently and kept disconnecting. It also makes downloading games take forever, I can download a 30gb game in around 2+ hours on my wired desktop but it took almost half a day to download the same game on my Deck.
I eventually found DeckMTP which lets you just copy files over USB C like you would do on your phone. But even after switching my Bios USB setting to DRD it still wouldn’t connect to my Linux desktop.
Apparently some SteamDeck bios update broke the DeckMTP plugin? But I’m finding a lot of conflicting information on the cause and solutions online, People saying it still works fine or that I have to update the bios manually or downgrade it to a previous version. Please tell me someone here knows what’s going on? Thanks in advance!
Not along your current methods, but cheap steam docks are cheap. Get one with ethernet.
Also if you have games installed to another steam host on your LAN you can download from there rather than the internet.
That was my backup plan but was hoping for a better solution. Thanks anyway :)