If you see an error in Odin saying "Binary Bit" or "SW Rev Check Fail," it means you are trying to flash an older version of Android than what is currently on the phone. Samsung does not allow downgrading to prevent hacking.
Before you touch a button, you need to know what firmware options exist for the S7 Edge (codenamed ). firmware samsung galaxy s7 edge
Here is an interesting guide to breathing new life into your S7 Edge, moving beyond the boring "official" firmware into the realm of "homebrew" software. If you see an error in Odin saying