Before you begin, ensure you are downloading the file specifically for the model. Using software meant for a different StarSat model can "brick" your device, rendering it unusable.
Updating your firmware isn't just about getting the latest version number. Manufacturers release "upd" files to provide:
If the device fails to start after an update, you may need to use an RS232 "loader" tool to re-flash the original factory firmware. Final Pro-Tip: Factory Reset
Ensure the USB is FAT32 and the file is in the root directory.
Most updates come in a .bin format inside a compressed .zip or .rar folder. Step-by-Step Installation Guide via USB
Plug the USB drive into the port on your StarSat SR-400HD PRO. 4. Navigate the Menu Press the button on your remote.
Updates the internal databases for better decryption of specific satellite feeds. How to Download the Correct Update File