WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: Can I back to 4.9 ?, by salamzaban Thanks for your attention. Just now my host specialist restore my website to 29th of December but after restoring of the database I have the “Error establishing a database connection” like before. On Thursday WordPress automatically updated itself from 4.9.0 to 4.9.1 and after that I have this problem. I re-uploaded the files of 4.9.1 manually, checked wp-config and httaccess too but nothing happened. What should I do now? Reply To: Can I back to 4.9 ?