Download the "out-of-the-box" version from the path /etc/fmdita/dita_resources/DITA-OT.zip in your AEM instance.
It is highly recommended to run the integrator tool on a Mac or Linux system to ensure file path compatibility across platforms. Re-package the ZIP ot.zip
Upload the updated ZIP to /apps/ /dita_resources . Use a WebDAV tool rather than the AEM Package Manager. ot.zip
Use the command line to install new plugins: dita --install .zip . ot.zip