#1
WordPress Tooltip Ultimate - Customisable Tooltip Generator
For updating, disable and delete the previous version, and install the new downloaded one. Or just unpack the zip you get from the download and overwrite the previous folder from wp-content/plugins/ via FTP
#2
WordPress Tooltips Ultimate & Image Hotspot
Add tooltips anywhere on your site on-the-fly by using our Live Tooltip button on the WordPress toolbar. And by anywhere, we mean anywhere, on menus, widgets, images, forms (gravity forms, contact forms 7, etc.), WooCommerce assets, you name it! You can add tooltips even at the backend administration panel!