I have manually used FTP to update the flatsome version by revising the folder name to old version and then pasted the new flatsome folder. But when I check the version from Dashboard, it still shows 3.8.1. What could be wrong?
Please contact your purchased theme author, theme author will assist you.
How to contact an author to get support or for any technical query:
you can use Envato Market WordPress Plugin. This plugin helps customers receive updates to their premium wordpress Themes & Plugins purchased through Envato Market (ThemeForest & CodeCanyon).