Even more easy:
open up the specific plugin directory;
find the php file in which the version of the plugin is mentioned;
change the version number to a high number (i.e. Version 1.1 to Version 100.1)
Even more easy:
open up the specific plugin directory;
find the php file in which the version of the plugin is mentioned;
change the version number to a high number (i.e. Version 1.1 to Version 100.1)