Keep holding until you see a "Software Updating" or "Upgrading" progress bar on the screen. The process can take 5–10 minutes. Do not turn off the power
Look at the physical board. You should see a silkscreen text like: tpdrt2841pb772 firmware free
Independent repair shops that specialize in industrial electronics often keep local archives of obscure firmware. A polite request to a shop’s technician may yield a free copy via email. Keep holding until you see a "Software Updating"
The is a widely used mainboard (motherboard) found in various TCL Smart LED TVs , such as the 32S6500 and L40S6500 series. Firmware for this specific board is essential for resolving common issues like being stuck on the logo screen, software "hanging," or system corruption. Firmware Basics & Availability tpdrt2841pb772 firmware free