Many users report that versions released after 9.31 (specifically the "cloned" versions) suffer from connectivity issues or "Device Not Found" errors. The 9.31 software architecture is perfectly tuned for the standard A1/A2 hardware adapters found in the aftermarket.

: Use V8.21 if you want maximum coverage and online support. Use V9.31 if you want a stable, always-working offline tool that doesn't nag you for subscriptions.

Acquire the Carprog 9.31 software package from your hardware vendor’s official link or a verified automotive diagnostic archive.