| Platform | Version Example | Release Date | Known Stability | |----------|----------------|--------------|------------------| | Android | 250.0.0.30.105 | Mid 2021 | Works on Android 5+ | | Android | 217.0.0.38.107 | Early 2020 | Very light, but many features broken | | iOS | N/A | N/A | Not feasible without jailbreak | Always test on a non-primary device first. For 99% of users, downloading an old Facebook version is not worth the risk. The combination of security vulnerabilities, broken features, and malware potential outweighs any perceived benefit.