If you need to update Magento 2 Extended Product Grid by Magefan, please follow the steps below. Note that the update instructions depend on the method Extended Product Grid was installed with.

Update using composer (Method 1)

If the Extended Product Grid was installed via the composer (check if vendor/magefan/module-product-grid-inline folder exists), then you need to run these simple CLI commands in Magento 2 directory:

composer remove magefan/module-product-grid-inline
composer require magefan/module-product-grid-inline ^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 Extended Product Grid was installed via FTP (check if app/code/Magefan/ProductGridInline folder exists), then follow these commands:

1. Download the latest version of the Extended Product Grid archive from magefan.com.

2. Extract archive.

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

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

Update Magento 2 extension via FTP

5. 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