If you need to update Magento 2 Full Page Сache Warmer by Magefan, please follow the steps below.

Note: the updating instructions depend on the method the Cache Warmer extension was installed with.

Update using composer

If the Page Сache Warmer module was installed via the composer (check if vendor/magefan/module-page-cache-warmer folder exists), then you need to run these simple CLI commands in the Magento 2 directory:

composer remove magefan/module-page-cache-warmer
composer require magefan/module-page-cache-warmer ^x.x.x
# replace x.x.x with the version you want to use
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static-content:deploy

Note: if you don't want your website to be down during deployment, try these zero downtime deployment commands for Magento 2.

Update using archive and FTP

If the Сache Warmer module was installed via FTP (check if app/code/Magefan/PageCacheWarmer folder exists), then follow these commands:

1. Download the latest version of the Сache Warmer extension archive from magefan.com.

2. Extract archive.

3. Make the backup copy of the app/code/Magefan/PageCacheWarmer folder on your server and then remove it.

4. Using FTP, copy the app folder from the archive to your Magento 2 Directory. 

Install Magento 2 Extension Using FTP

4. Run update CLI commands in Magento 2 directory:

php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static-content:deploy