Again to echo @rj-45's comments... still not worth learning/challenging on this. Even if you do get things running, you'd be learning a bunch of stuff where the specific details are both obsolete and not useful anymore. If you get a new(-ish) router and work with a current version (v18 or v19), you'll learn a lot and it will all be useful.
As an analogy, unless you are either a computer historian or looking for an extremely niche job, you wouldn't go learn COBOL, would you? You'd learn modern programming languages so that your knowledge is useful.