Important Steps

1. Update Composer Version
   

   composer self-update 2.2

2. Update Magento Enterprise Edition Package
   

   
   composer require-commerce magento/product-enterprise-edition 2.4.6-p1 --no-update
           

3. Update Magento Cloud Metapackage
   

   
   composer require-commerce magento/magento-cloud-metapackage:">=2.4.5 <2.4.6-p1" --no-update
           

4. Run Composer Update
   

   composer update

5. Clean Cache and Generated Files
   

   
   rm -rf var/cache/*
   rm -rf var/page_cache/*
   rm -rf generated/code/*
           

6. Run Magento Setup Commands
   

   
   php bin/magento setup:upgrade
   php bin/magento setup:di:compile
   php bin/magento indexer:reindex
   php bin/magento cache:flush
           

7. Set Permissions
   

   
   sudo chmod -R 777 var
   sudo chmod -R 777 pub
           

8. Install Required Package (If Needed)
   

   composer require laminas/laminas-serializer

Important Notes

• Always take a full backup before upgrading.
• Use correct Magento version compatibility.
• Avoid using 777 permissions in production.
• Run commands in maintenance mode for production environments.