If you need to update Magento 2 Auto Language Switcher Extension by Magefan, please follow the steps below.

Note: the updating instructions depend on the method the Auto Language Switcher extension was installed with.

Update using composer

If the auto language switcher module was installed via the composer (check if vendor/magefan/module-auto-language-switcher folder exists), then you need to run these simple CLI commands in Magento 2 directory:

composer remove magefan/module-auto-language-switcher
composer require magefan/module-auto-language-switcher ^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 auto language switcher module was installed via FTP (check if app/code/Magefan/AutoLanguageSwitcher folder exists), then follow these commands:

1. Download the latest version of auto language switcher extension archive from magefan.com.

2. Extract archive.

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

4. Using FTP, copy 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