Guide: Firmware Update for Sony KDL-50W800C

The Sony KDL-50W800C is an Android TV model. Firmware updates are essential for maintaining performance, fixing bugs, patching security vulnerabilities, and ensuring apps like Netflix and YouTube continue to function correctly.

Known Issues & Warnings

Before you install, be aware of these verified bugs:

If you encounter any issues during a firmware update, here are some troubleshooting tips:

App Compatibility: Ensure major streaming services like Netflix, YouTube, and Amazon Prime continue to function correctly.

Our recommendation: Wait 2–3 weeks after this article’s date. Sony often releases a "silent" hotfix (v6.404.0642) that addresses the thermal policy. Check the Sony support page for the letter suffix—"NAB" and "EUB" are safe; "NAA" was the problematic hot run. If you see "NAC" or "EUC," that’s the revised cooler version.

1. Turn on the TV and press the HOME button on the remote.
2. Navigate to Settings (the gear icon).
3. Scroll down to About.
4. Select System software update.
5. The TV will check the Sony servers. If an update is available, it will say “A newer version is available.”
6. Select Download.
7. Crucial Step: Once the download finishes, the TV will prompt to install. Do not unplug the TV during this process. The screen may turn off and on several times.

• Unplug TV, wait 10–15 minutes for capacitors to discharge, plug back in and test.

So, what exactly is this update? Should you install it? And why are people calling it "hot"?

When to contact Sony service or a technician