JVC LT-43VAQ7235 Vestel 17MB185 - where to find firmware for red LED blinking?

Mark:JVC
Model:LT-43VAQ7235
Chassis (main board, components): Vestel 17MB185, 180721R2A
LCD Screen/Panel (if exist): VES430QNZB-M1-Z01
More information: Product code 10138149, serial number (SN) is 2305300579
Hello friends! I am looking for firmware for my TV JVC LT-43VAQ7235. The TV is not possible to turn on, only the red LED is blinking. Could somebody help me please? Thank you. Miloslav