I know what it can do. But I wanted to know if I could execute the eth mining with some files
No you don't...
Both the R1 and the new R1LTC are ASIC-based miners with the algorithms hard-wired into the chips: That means they can only mine what they were designed to mine. No changing that -- ever. SHA256 (BTC) and the various altcoin algorithms (for the R1LTC that means Litecoin) are massively different operations.