If you are getting the following error when you trying to update WordPress. Then this article may helps you.
Downloading update from https://downloads.wordpress.org/release/wordpress-xxx-partial-x.zip… Download failed.: The checksum of the file (xxx) does not match the expected checksum value (). Installation Failed
Check disk space and permissions
The most probable two situations you need to check are:
- Check disk space. You are probably running out of the disk space. If you are on a Linux server, run
df -hto check the available space.
- Check permissions. When you are updating WordPress on the dashboard by clicking
Update nowbutton, the user is that one that running the Web server. Make sure that user have write permission to the WordPress core files. See the tutorial on Changing File Permissions for more information,
Restart your Web server
If neither of the situations mentioned above is your problem, and you’ve updated WordPress successfully the last time, and nothing seemed to have been changed afterwards, just try to restart your web server. Then update again.
Update via WP-CLI
If no luck once again, maybe you can attempt to update WordPress through WP-CLI (WordPress Command Line Interface). Getting started to use WP-CLI is very simple, just download a phar file on the server, make it executable. Then you are ready to use it. And some WordPress in has been shipped with WP-CLI.
# Update to the latest WordPress version $ wp core update
Make sure you have write permissions to the WordPress core files and the updated file can be written by the Web server user (who are running the Web server) afterwards.
A simple method is to execute update command as the root user. This will make the files updated to be owned by the root, you need to reset the ownership and restart the Web server to take effect. What we do here is just to make Web server user have write permissions to these files, remember that.
# Update WordPress as the root $ sudo wp core update --allow-root # Reset the ownership to the user who runs the Web server. $ sudo chown -R <web server user> <wordpress path>
If all the above solutions do not work for you, mannual update can be a last resort for your.