Here is an informative overview of this file and the process: What is the T.R85.A81 Board?
.bin file (e.g., UBOOT_705.bin or similar) onto the USB drive. into the TV board. Download R85 A81 1600X900 rar
A universal motherboard used to replace damaged mainboards in LED TVs or to convert computer LCD panels into TVs. Here is an informative overview of this file
The indicator light should flash (red/blue). Download R85 A81 1600X900 rar