This article applies to those who has installed the open source version and want to upgrade it to the professional version.

1.Download professional version upgrade extension

We offer the upgrade package from the open source version to professional version. You can ask for a 6 months free trial by contacting renee@cnezsoft.com.

2.Ioncube Loader

Install decryption software, Ioncube Loader.
If you are using our new installation package which ioncube has been built in, you can skip this step.
If you are using the previous uniserver or other PHP operating environment, you can refer to this article  http://www.zentao.pm/book/zentaoprohelp/135.html to install loader:

3.Install ZenTao Pro as extensions

3.1 Login ZenTao as Admin, then go to Administration-> Extension and click Local Install. Select the extension package of ZenTao Pro and upload it to install.

3.2 If there is the following error, check whether there is an extension folder under the TMP directory. If no, built one.

3.3 If successfully uploaded, click Yes to the License.

3.4 You may have to wait a little before a successful installation interface shows.