Here is everything you need to know about the firmware change/update process for the KDL-50W800C.

Have you experienced the heat issue? Report your findings on the official Sony Community thread for PKG6.8285.

Because you can no longer pull the package directly down from the TV's built-in network menu, follow this manual extraction and installation protocol: Step 1: Secure the Correct Firmware File Drivers and Software updates for KDL-50W800C | Sony USA

If the update progress bar freezes for more than 30 minutes, do not unplug the TV immediately. Wait a little longer. If it remains completely frozen, power cycle the TV by unplugging the main AC power cord, waiting 2 minutes, and plugging it back in to restart the process.

The TV's bootloader cannot read NTFS, exFAT, or macOS extended file systems. The USB drive must be formatted to FAT32.

A Windows PC or Mac to download, extract, and transfer the firmware file.

To perform a manual firmware change or update via USB, you will need the following items: