# rusEFI Bundle `rusefi.bin` file is compiled rusEFI firmware. Sometimes you would have `rusefi_no_asserts.bin` variation of this file with fewer safety checks. `rusefi.dfu` is also compiled rusEFI firmware, that file is used for DFU mode of flashing. `rusefi.ini` is TunerStudio project template file, you would use it if you use TunerStudio software to tune your rusEFI unit. [TunerStudio Download](http://www.tunerstudio.com/index.php/downloads) See [http://rusefi.com](http://rusefi.com) and [the rusEFI Wiki](https://wiki.rusefi.com) for more information about rusEFI