(Null Modem cable) and a PC with a serial port or a high-quality USB-to-Serial adapter.
STB ERom Upgrade 2.0.0c is a Windows-based loader tool used to update or recover firmware on satellite set-top boxes (STBs) using a serial connection. This tool is typically used when a receiver is "bricked" (stuck on a red light or "ON" message) or needs a manual software flash via a computer. Google Groups Prerequisites