Wordpress- how to disable plugin update

I've found a great plugin for WordPress under GPLv2 license and made a lot of changes in source code, plugin does something else now. I modified author (with original plugin author's credits), URL, version number (from xxx 1.5 to YYY 1.0).

Everything works great, but when WordPress checks for plugin updates it treats my plugin YYY 1.0 as xxx 1.0 and displays notification about available update.

My changed plugin YYY 1.0 was installed by copying files from my computer, not from WP repository.

What else do I have to change?

Disable plugin update

Add this code in your plugin root file.

add_filter('site_transient_update_plugins', 'remove_update_notification');
function remove_update_notification($value) {
     unset($value->response[ plugin_basename(__FILE__) ]);
     return $value;
} 

Put this code in the theme functions.php file. This is working for me and I'm using it. Also this is for specific plugin. Here you need to change plugin main file url to match to that of your plugin.

 function my_filter_plugin_updates( $value ) {
   if( isset( $value->response['facebook-comments-plugin/facebook-comments.php'] ) ) {        
      unset( $value->response['facebook-comments-plugin/facebook-comments.php'] );
    }
    return $value;
 }
 add_filter( 'site_transient_update_plugins', 'my_filter_plugin_updates' );

Here:

"facebook-comments-plugin" => facebook comments plugin folder name

"facebook-comments.php" => plugin main file.this may be different like index.php

Hope this would be help.

The simplest and effective way is to change the version of the plugin which you don't want to get update. For an example if I don't want wptouch to get updated, I open it's defination file, which is like:

/*
    Plugin Name: WPtouch Mobile Plugin
    Plugin URI: http://www.wptouch.com/
    Version: 4.0.4

*/

Here in the Version change 4.0.4 to 9999 like:

/*
    Plugin Name: WPtouch Mobile Plugin
    Plugin URI: http://www.wptouch.com/
    Version: 9999

*/