1. Backup the project by copying the `projects` folder and `outputs` folder to another folder, skip this step if you don't have a project yet.
   
2. Then Download imabuilder latest version (20.11.x or latest) from https://codecanyon.net/downloads
3. Extract the obtained Zip file, or overwrite it to update the old AppBuilder
   
4. Then Go to http://yourimabuilder/rev19.11.15/setup.php or click Unregister to update your Old AppBuilder
   
   Clicking on this unregister is important for updating.
5. Click Test My Server Tab, Is there an error? If there is an error, please fix it first
6. Then Click Activation Tab, then fill Fullname field, Email field, and Purchase Code field (You can get purchase code on codecanyon.net, read this articles)
   
7. Then click Get Activation Code Button
8. If you have got an activation code, click Register Button
   
9. Repeat the above steps if the core: error still occurs or or the interface and core versions are not the same.
   

Last edit: 2022-12-17 10:15:00