1. Install the latest version of OpenUTAU here.

2. Download a VOISTAR AI Singer for DiffSinger (such as AURORA Omnis AI).

3. Drag and drop the voice's .zip archive onto OpenUTAU and follow the on-screen instructions to install it. Select UTF-8 Encoding during installation.

4. Download the HiFi-GAN Vocoder here and drag it onto OpenUTAU to install it.

5. Select your singer, then select the appropriate Phonemizer (DIFFS EN for English, DIFFS JA for Japanese, etc)

6. Select your preferred Resampler and Wavtool. Place them in the corresponding folder in your OpenUTAU root director ("Resamplers" & "Wavtools"). Select them from the dropdown menu in order to use them during synthesis.