The patched IPA comes from an untrusted source. Anyone with basic skills can inject malware, spyware, or credential stealers into an IPA. Always check the hash (MD5/SHA256) against known good releases from trusted communities like or r/sideloaded . If the file is 50MB and the official YouTube IPA is 180MB, run away.
The "11499" version became popular in modding circles because it was stable, less aggressive about detecting mods, and compatible with popular sideloading tools before Google introduced more robust anti-tampering measures.
You do need a jailbreak to install this IPA. You need a sideloading method. Here are the three most common ways.
: You must "refresh" the app every 7 days while connected to the same Wi-Fi as your computer to keep it active. 2. Using Sideloadly or TrollStore