: If your TV uses the Roku platform, you can download specific manual update files by entering your Hardware ID at tvupdate.roku.com . Verified Community Sources
: There is a well-known community Telegram channel for TCL firmware where users share genuine files by searching for their "Project ID" found in the TV settings.
Are you trying to or just looking for a feature update ? How can I update the software of the TV? - TCL USA
Direct downloads for specific multi-part firmware files like "RTD2841 TCL UnionTV Firmware part04 rar" are not typically available on official TCL websites, as their systems use or a single unified package for manual updates.