Replacing a Photo in Your Facebook Post (Published 2017)
If you publish the wrong photo to your timeline, you can delete it and substitute the right picture without losing comments and reactions.
3 Apr 2017 ... To do that, go to the post on your Facebook timeline with the picture you want to change. Image. On the ... Select “Photo/Video” from the menu. ... You can use the Edit Post option to correct typos in previously published posts.