The story of the Sony 43W800C firmware is often one of technical survival, as users of this 2015-era Android TV have frequently faced critical software "loops" and hardware degradation over its decade-long lifespan. The "NAND Chip" Crisis
To ensure you have the correct and verified version, check your current software in the TV settings: Target Version : The final major update for many regions is Verification Method button on your remote. Navigate to Customer Support Product Support to view the version number. firmware sony 43w800c verified
This is the safest way to ensure you are getting the correct, verified file for your specific region. The story of the Sony 43W800C firmware is