Reply to #1241984: Yes,
option_name = avia_envato_keys
option_value = a:1:{s:6:"Enfold";a:1:{s:4:"item";a:2:{s:24:"wordpress_theme_metadata";a:3:{s:10:"theme_name";s:6:"Enfold";s:10:"stylesheet";s:6:"enfold";s:7:"version";s:5:"5.6.9";}s:2:"id";s:7:"4519990";}}}

Just update string s:7:”version”;s:5:”5.6.9″; where 5.6.9 is theme version and before s:5 means quantity of chars, so “5.6.9” contains 5 chars. if your version is “4.7.6.4” then before should be “s:7” as “4.7.6.4” contains 7 chars.