As of early 2026, Sony has officially terminated software update downloads for several older BRAVIA models, including the W800C series in regions like Asia-Pacific and Hong Kong. Final Verified Firmware Versions: Version: v3.865 (or v6.7220 in some regions).
Below is a draft post you can use for community forums or social media to share the latest verified status. Sony 43W800C Firmware Update [Verified Status 2026] If you're still rocking the Sony BRAVIA KDL-43W800C firmware sony 43w800c verified