Attempt a standard software update via USB first.
If the USB method fails, the eMMC chip must be desoldered and flashed with the firmware image (User and ExtCSD partitions) using a programmer. Official Resources Download 35019017 1920x1080 DNS 42AK9000 part1 rar
The file is a compressed archive containing firmware for the DNS 42AK9000 Smart TV . This specific firmware is intended for units using the 35019017 mainboard and is used for software restoration via USB or direct eMMC flashing. Technical Specifications & Components Mainboard: Konka 35019017 . Attempt a standard software update via USB first