Never turn off your TV or remove the USB drive during the installation process, as this can damage the device. 50PUT6800/56 6800 series 4K UHD Slim LED TV ... - Philips
To update your TV firmware via USB, follow these steps provided by Philips Support : Format an empty USB flash drive to FAT32 . Download PHILIPS 50PUT6800 Firmware part01 rar
Follow the on-screen instructions. The TV will restart once the process is complete. Never turn off your TV or remove the