Zen Cart is made available to you for your use, addition, changes, modification, etc. without charge, under Version 2 of the GNU General Public License.
While we do not charge for this software, donations are greatly appreciated, each time you install a new version, to help cover the expenses of maintenance, upgrades, updates, the free support forum and the continued development of this software for your online E-Commerce store.
Donations can be made on the Zen Cart Team Page
We appreciate your support.
The Zen Cart Team
For up-to-date requirements, see: Zen Cart Server Requirements.
While Zen Cart can run on Windows/IIS servers, Linux/Apache servers are recommended for best results.
This documentation was built at the time of the software release. The Zen Cart FAQ is updated constantly and may be more up to date. Please see upgrade documentation on the Zen Cart FAQ.
This is a basic guide to upgrading Zen Cart. If you have not yet installed Zen Cart, please see the 1.readme_installation.html file for installation instructions.
READ THIS FIRST: How do I rebuild my site on the new version, instead of upgrading?
Detailed upgrade instructions that help you retain your customizations while upgrading to new features, can be found in this related article.
Before you begin, remember to make a complete backup of your files and database.
ANSWER: Another way to look at it is this: An “upgrade” is essentially a rebuilding of your site.
The steps outlined above are the recommended way to do it so that you rebuild your site in a temporary location, letting you resolve all potential problems before you ever touch your actual live site. This gives you time to sort out whatever needs sorting “just in case”, and allows you to keep taking sales while you’re preparing the upgrade. It also helps take some of the pressure off and makes it less urgent to do it all in one fell swoop.
The process of comparing your site against the original code for the old version is, in one sense, to simply help you quickly identify what customizations you need to make to put those same capabilities into your new site. It simply speeds the process and creates a sort of checklist of things for you to re-do on your new site.
Then, after you’ve got it all built in the temporary location, you put your live store down for maintenance, quickly redo the upgrade there, and then bring it online … meaning your actual live store’s downtime could be as short as 5-10 minutes depending on complexities etc.
So, follow the guide, and while there may be some learning involved and remembering of things you did awhile back, it’s all time well spent.
ANSWER: You can upgrade to the latest version directly. When you do the database-upgrade step in zc_install it will show you all the database-version-levels which need upgrading, and will pre-check the checkboxes for you and will take care of upgrading through all those steps automatically. Usually you can just leave those boxes checked and put in the admin password and proceed with the upgrade, which normally will take just a few seconds.