To edit one of your accepted preprints, you can update the DOI entry with a newer version of the article manuscript via your account.
You might also be able to simply add the peer-reviewed article DOI to the current version of the preprint.
– how to do that on OSF: help.osf.io/hc/en-us/articles/360019930573-Edit-Your-Preprint<
By submitting your work through us to any of our partner repository services African scientists of any discipline can present their research findings and connect with other researchers on the African continent and globally free of charge. All our partner repositories assign a DOI (digital object identifier) and an open scholarly license (usually CC-BY 4.0) to your work ensuring discoverability in research databases through the Crossref indexing service.