Is it correct to say "files from 3 days ago" or "files of 3 days ago"?
The situation you've depicted has some grammatical issues, so I can't quite grasp the context, but I will do my best. I'm assuming the situation is that a computer no longer works, and it contains data(files) that needs to be accessed?
Your answer would be: "We need to get the status files on the computer from 3 days ago."