This plugin updates jQuery to the latest official stable version, which is most likely not available within the latest stable release of WordPress. Since jQuery 2+ was used in this plugin, making jQuery 1.x obsolete, jQuery Migrate is also included. No files are replaced, therefore deactivation of this plugin returns your site to it`s original state. Warning If you are not familiar with beta testing, bugfixing, javascript or running bleeding edge software it`s not recommended. I will not provide help on JavaScript and jQuery! Reporting problems Please post bug reports and request for help on WordPress.org Support Forums. I will only provide help on issues caused by the plugin, not on JavaScript and jQuery related matters! Please report feature requests and code changes on GitHub Issues page If you run into any bugs, turning this plugin off will fully deactivate everything. Work in Progress Options screen to enable/disable Option to choose a specific jQuery version Automatic cache flushing For more information on the development visit the plugins GitHub