Rt3 Upgrade 651 Na 663 Build 890 Can42 New Jun 2026

: Includes optimized support for the CAN-bus protocol, enabling more reliable and faster data exchange between the head unit and the vehicle's other electronic modules.

: Enhances the digital signal processing for improved sound fidelity and smoother volume transition control. rt3 upgrade 651 na 663 build 890 can42 new