: For standard firmware updates (if the TV still boots to a menu). 3. Installation Guide (USB Method)

If you have a functional firmware file (e.g., upgrade_loader.pkg ), follow these steps:

: Since this is a "dump" and not a standard USB update, you often need an external programmer (like the RT809F or CH341A) to write the file directly to the memory chip on the board.

Official firmware is usually provided as a .pkg file directly from Hisense Support . However, for specific board "dumps" (RSAG7.820.1898), technicians often use community-driven databases: