Files with "Dark" or "Pro" prefixes that are not on an official website (like GitHub or a manufacturer's page) are often trojans or ransomware.
How to flash RubyFPV to Runcam WiFilink v2 (and initial setup) Download Dark Ruby FFP zip
1st Flight With Ruby FPV 11.0 | What Are Your Best Settings? Files with "Dark" or "Pro" prefixes that are
If you have already downloaded the file, do not unzip it. Run it through a multi-engine scanner like VirusTotal to check for malicious signatures. Download Dark Ruby FFP zip