Can you provide the found inside your TV to help narrow down the exact firmware archive?
To find the specific "part 03" file, which is likely part of a split RAR archive, you should search for the (e.g., CV338H-A42 or similar) typically printed on the TV's internal board. Where to Look for These Files Download ROSSO Smart 32S70 Firmware part03 rar
: Place the extracted firmware file (not the RAR) into the root directory of the USB. Install : Can you provide the found inside your TV