Certain pieces of content – like those advising on how to effectively set up a new iPhone model straight out of the box – can quickly fade in relevancy. Other pieces, however, could age like a fine wine and even become more topical over time.
Various forms of marketing content – like articles, blog posts, graphics, and even videos and podcasts – originally published years ago can be effectively refashioned into ‘fresh’ material. Here are some especially strategic ways you could make this happen.

Source: https://www.entrepreneurshipsecret.com/ways-to-update-and-repurpose-old-marketing-content/