: The site KenotronTV and various Telegram groups often host USB-upgradeable versions of this firmware for various brands (Skyline, Akai, Eurostar) using the same board. Installation Steps
board are hosted on sites like OneTV , which lists firmware with a similar configuration (e.g., 602 MB file size). : The site KenotronTV and various Telegram groups
Keep holding the button until the "Software Updating" screen appears on the TV. : The site KenotronTV and various Telegram groups
: The string 20200814 135841 indicates this is a build from August 14, 2020. : The site KenotronTV and various Telegram groups
If you obtain the .zip or .bin file, the typical manual update process for this board is as follows: : Use a FAT32-formatted USB drive.