OpenCart installer is a great tool to install new extensions on OpenCart. However, if you have modifications in the extension it could become difficult to update it.


Unable to update an extension because ID already exists.


To update your extension using opencart installer follow this steps:

  1. Go to Extension > Modifications
  2. Remove the extension you want to update
  3. Go to Extension > Installer
  4. Update your new version of the extension
  5. Click on continue when the list of files show up
  6. Go to Extension > Modifications and hit refresh just to make sure

That’s all, I hope it can help you.

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