software repair, and/or change?

I have an old one of these that probably works in a hardware sense, but i'm not sure our account still works, or that the software itself does. and even if it does i don't have high hopes for meta's reliability (let alone privacy). Does anyone know if there are options available for changing out the software, or similar diy methods? (basically changing/repairing a computer operating system but for vr i guess)