Updating Eventmie Pro is simple. Just download the latest version of Eventmie Pro from Classiebit.com - Downloads page after login into your account.
Extract the eventmie-pro-v1.2.x.zip file.
Copy the eventmie-pro folder and go to your website directory.
Delete the current eventmie-pro folder & replace it by the new one.
Then run the composer update command
On production (live) server, run this command as well
composer install --optimize-autoloader --no-dev
Finally, run the auto-updater command
php artisan eventmie:update