After extensive research across vendor portals, abandonware forums, and archival projects, here is the most actionable advice:
Ask the vendor for a cross-grade to their current software (e.g., ISM V90). They often provide a migration tool that can read V63 configurations. While this costs money (usually $500-$2,000), it includes official support and clean installers. ism v63 software download link
: Includes support for Marathi, Hindi, and several other Indian languages with built-in keyboard layouts like INSCRIPT. After extensive research across vendor portals