Uh, no. That tutorial uses Unity Assets Bundle Extractor.
This one uses AssetStudio.
And you don't have to spend months getting the sprites from a single to multiple sheets. You can get a single sprite, and organize them on a sheet (or put them in a ZIP file) with ease
This one uses AssetStudio.
And you don't have to spend months getting the sprites from a single to multiple sheets. You can get a single sprite, and organize them on a sheet (or put them in a ZIP file) with ease