For iOS 15+, version 15.02.1 runs fine, but some features (like casting to Chromecast) may be broken.
| Source Type | Examples | Safety Level | |-------------|----------|---------------| | GitHub | Search youtube-15.02.1-ipa | Medium (check stars/forks) | | Internet Archive (archive.org) | Legacy iOS app section | Medium-High | | Jailbreak subreddits | r/sideloaded, r/jailbreak | Medium (read comments) | | Telegram groups (sideloading-focused) | @iOSGods, @AppDB | Low-Medium (risk of malware) |