If you need to update Magento 2 Google Page Speed Optimizer by Magefan, please follow the steps below.

Note: the updating instructions depend on the method the Google Page Speed Optimizer was installed with.

Update using composer

If the Google Page Speed Optimizer was installed via the composer (check if vendor/magefan/module-speed-optimization folder exists), then you need to run these simple CLI commands in Magento 2 directory:

composer remove magefan/module-NAME
composer require magefan/module-NAME ^x.x.x
# replace NAME with:
# speed-optimization - for Basic plan
# speed-optimization-plus - for Plus plan
# speed-optimization-extra - for Extra plan
# 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

If you want to upgrade to Plus or Extra, check this guide on how to upgrade Google Page Speed Optimizer plan.

Update using archive and FTP

If the Google Page Speed Optimizer module was installed via FTP (check if app/code/Magefan/SpeedOptimization folder exists), then follow these commands:

1. Download the latest version of the Google Page Speed Optimizer archive from magefan.com.

2. Extract archive.

3. Make the backup copy of the app/code/Magefan/SpeedOptimization or app/code/Magefan/SpeedOptimizationPlus or app/code/Magefan/SpeedOptimizationExtra folder on your server and then remove it.

4. Using FTP, copy the app and lib folders from the archive to your Magento 2 Directory. 

magento 2 Extension Installation

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

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