So you've updated your plugins...
... and your blog doesn't work anymore
... and you have no backup
... of course not!
Wouldn't it be nice if you could download the previous versions and get your blog back on track again? Well... you can!
Tell your browser to go to wordpress.org/plugins/<your_plugin> and navigate to the rightmost tab called "Developers" (1):
Here you can download every version of the plugin ever published to wordpress.org. Click on the version number to download the plugin as a ZIP file (2), use FTP to copy it to your server, and be happy again. Until next time.