To update the firmware on your Sony KDL-43W800C , you can either use the built-in automatic update feature or perform a manual update using a USB drive. 1. Verification: Check Current Version
| Aspect | Verified? | Explanation | |--------|-----------|-------------| | Official from Sony | ✅ Yes | Firmware from Sony Support is genuine | | Untampered download | 🔸 User-dependent | You must compare SHA-256 if Sony provided (they don’t) | | Signed by Sony | ✅ Yes | All official updates cryptographically signed | | Bootloader check passed | ✅ Yes | Verified on device during install | | No known backdoors | ⚠️ Unverifiable | No public audit; old Android version has known CVEs | firmware sony 43w800c verified