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How to upgrade magento v2.3 (v2.3.4) to magento v2.4 using Composer and Command line
Please Backup database and file
First, run elasticsearch, ok
1.To install the plugin:
cmd:
composer require magento/composer-root-update-plugin=~1.0 --no-update
2.Update the dependencies:
composer update
3.Upgrade Magento Open Source:
composer require magento/product-community-edition=2.4.0 --no-update
4.Apply updates:
composer update
5.Clean the Magento cache:
php bin/magento cache:clean
6.Update the database schema and data:
php bin/magento setup:upgrade
login admin fix: php bin/magento module:disable Magento_TwoFactorAuth
Ok, Thank for watching. See you