Hi,
I'm trying to flash the Weltrend on NetDog75's TV

Can someone help about what software and hardware can be used to flash the IC? It's an i2c bus, and i only havea CH341-based SPI/I2C programmer, and USB-TTL interfaces. Also, which software can be used? I don't know how to set up Postal, as no information can be found for it, and its UI is very bad

Is there any other stuff what can be used? (I'm downloading RT809H, but not sure...)