Please find the instructions below:
You can download new version of theme in our Debutify app and it will be downloaded as fresh copy.
Once done, please bulk-update add-ons (if installed) on newly installed theme.
You can copy your previous theme settings by copy and paste the content of the file settings_data.json
NOTE: However, you will still need to reinstall any code added by apps, so you need to contact the app support for this.