Плагин Activate Update Services

WordPress removes the Update Services ability (Settings — Writing) when you create a network (aka enables WordPress MU/Multisite). Activate this plugin to get it back.

Note: This is only for WordPress setups with a network, aka multiple sites, aka multisites, aka WPMU in WordPress 3 and later.

This plugin might work with older WordPress MU sites. I haven’t tested it though. If you do, please let me know how it turned out.