If you need to update Magento 2 Google Shopping Feed Extension by Magefan, please follow the steps below. Note that the update instructions depend on the method the Google Shopping Feed extension was installed with.

Update using composer (Method 1)

If the Google Shopping Feed module was installed via the composer (check if vendor/magefan/module-google-shopping-feed folder exists), then you need to run these simple CLI commands in Magento 2 directory:

composer remove magefan/module-google-shopping-feed
composer require magefan/module-google-shopping-feed ^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

Update using FTP  (Method 2)

If the Google Shopping Feed module was installed via FTP (check if app/code/Magefan/GoogleShoppingFeed folder exists), then follow these commands:

1. Download the latest version of the Google Shopping Feed extension archive from magefan.com.

2. Extract archive.

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

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

Update Magento 2 extension via 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