: This is a major Russian-language forum for TV technicians where almost every firmware dump is archived. You will likely need to pass a short technical quiz to create an account and download files. Important Considerations
: This is a primary source for "firmware dumps" used by electronics experts. You can find a dump for the TP.SIS231.PT85 board here. Note that while this link is for a Smart-Tech TV, it uses the exact same board.
Finding a specific firmware "dump" file (like a .bin or .rar ) for specialized TV repair usually requires access to technician-focused databases rather than official consumer sites.
: While official sites rarely provide "dumps" (SPI Flash images), you can check the Hisense Global Support or the Russian Hisense Support pages for standard USB firmware updates by entering your serial number.