: If your TV can still power on and connect to the internet, navigate to Settings > Support > Software Update . Selecting "Update Now" will trigger the TV to search for and install the latest official firmware automatically.
: To clear persistent software bugs, go to Settings > Device Preferences > Reset > Factory Data Reset . Download Videocon VKV40FH17XAH FHD Firmware rar
: If the firmware is completely corrupted and the TV won't boot (bricks), it may require manual EEPROM programming , which involves using a hardware programmer to flash the firmware directly onto the TV's internal memory chip. : If your TV can still power on