The firmware is often split into multiple .rar parts (like "part08") because the total file size can be large. You can find detailed posts and download links from these community and technical sources:
—is part of a multi-segment firmware archive used for flashing or repairing this board. Key Specifications of TP.SK708D.PC821 Go to product viewer dialog for this item. True 4K support (3840 x 2160 pixels). Operating System: Android 9.0. Download SK708D PC821 3840X2160 MEDIASTR REF90 part08 rar
Expert posts on platforms like Electro-Support (Facebook) often provide direct links to firmware archives for this specific motherboard model. The firmware is often split into multiple
The is a universal 3-in-1 smart LED TV motherboard that supports 4K (3840x2160) resolution and runs on Android 9.0 . The specific file you are looking for— SK708D PC821 3840X2160 MEDIASTR REF90 part08 rar True 4K support (3840 x 2160 pixels)
Quad-Core A35 CPU with configurations typically including 1GB/2GB RAM and 8GB/16GB ROM. Connectivity: Integrated Wi-Fi and HDMI interfaces.
If firmware flashing does not resolve the issue, replacement boards are available through major retailers: