1.Start the Atlantica program and let the game's launcher automatically update your software.
2. If you want to manually update your software, download the most recent patch file and double-click the downloaded executable (.exe) file to bring the Atlantica client up to date.
PLEASE NOTE: If you have not updated Atlantica with some or all of the earlier patches, you must first install those beforehand, in order, from older patches to newer patches.