Can my client upgrade from Avisio v1.2.1 to enfold?

My client’s Avisio Version: 1.2.1 theme has stopped working and he’d like to know if he can just change to the Enfold theme to regain the functionality and appearance he had with Avisio? I didn’t set up the theme for him and since the theme options are inaccessible following an update to the latest version of WordPress, I can’t tell what will be involved replicating the original look and feel.
Thanks in advance for your assistance