Verified fixes often involve manually installing the Samsung Exynos USB Driver . This driver allows your PC to communicate with the phone when it appears as a "USB Serial Port" or "Exynos USB Device" in Device Manager.

"We performed our own FMEDA (Failure Modes and Effects Analysis). The verified driver reduces the SPFM (Single Point Fault Metric) from 78% to 99.1%. This meets ASIL-B requirements."

: This is the primary requirement for standard ADB and Fastboot connections. The latest verified version for 2026 is v1.9.0.0 , released in April 2025.

: Ensure you are using a genuine version of Windows. "Test versions" of Windows often block the specific signing required by Exynos port drivers.

System Validation Team