The internet is full of “firmware download” sites. Many are scams or distribute malware.
Updates the UI and expands compatibility with streaming platforms like Netflix and YouTube. Firmware TCL L43S6500
Full system images used for major version upgrades or to recover a TV that is stuck on the "TCL Logo" (boot loop). Key Benefits of Firmware Updates The internet is full of “firmware download” sites
Extract the file if it is packed inside a .zip or .rar archive. Firmware TCL L43S6500
Select (on some versions, this may be under More Settings ). Choose About and then System Update .