Firmware Tcl L40s6500 Jun 2026

Press and hold the physical on the TV (not the remote) while plugging it back into the wall.

– Look on the back of the TV for the full model number (e.g., L40S6500 A , L40S6500 U , or L40S6500 S6500 ). The letters matter. Firmware TCL L40S6500

– Something like V8-T658T01-LF1Vxxx or MB240 . This is the real key. Press and hold the physical on the TV