Installing incorrect or unofficial firmware can permanently damage (brick) your TV. Always verify your Chassis No (e.g., RT41 for some RTD2841 models) and Product Info before attempting a manual flash.

To safely update your TV or find genuine firmware, use these official or verified methods: Official Update Methods : Go to Settings > System (or Device Preferences ) > About .

: 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.

They will provide a specific .bin or .img file tailored to your hardware.

: 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