Run upgrade in admin
Upgrade your AbanteCart eCommerce application core version once in a while, since important fixes or new features will be released.
Before upgrade
Recommended that you DO NOT upgrade AbanteCart on the live site. Depending on your server or OS configuration upgrades might not go all the way through and you will need more time for the manual upgrade. We suggest you upgrade your test site first and always create backups.
Upgrades are available only from a prior version to the next. If you do not upgrade for a long time, you will need to run all upgrades in between. If you have made Core modifications in any of the files that have changed, they may need to be redone.
Update notification.
You will see an update notification once you log in to the admin. It will show in your message box.
Follow the link
In the notification message, click on the upgrade link.
You can also use key abantecart_upgrade_144 (abantecart_upgrade_version) to submit to the extension install section.
Fix file permissions
If you have files or directories that do not have write permissions, you will be asked to do upgrade using FTP. You can change permissions on required files to be writable (777) or just make all files and directories writable for the upgrade process. This can be and recommended changed back after an upgrade. If you encounter issues or do not feel comfortable with permissions, run a manual upgrade instead.
After upgrade
Recommend to:
Clean browser cache - please purge browser cache. When updating the application, your browser may still use old coockies and CSS files.
Set strict permissions on php files. Most PHP files require to be 0644 and more strict 640 for index.php and system/config.php