If the IPA route seems too complex, there is a nuclear option:
Here’s why a real review is impossible, along with the risks you should know: Youtube Ipa For Ios 10.3.4
IPAs from unofficial sources (especially for old OS versions) often contain malware, adware, or code to steal login credentials. Since iOS 10 has known unpatched vulnerabilities, using such an IPA puts your device at high risk. If the IPA route seems too complex, there
Google changed their SSL ciphers. iOS 10.3.4 doesn't speak modern TLS 1.3 well. Fix: Install a tweak called "LegacyCertFix" (via the repository cydia.invoxiplaygames.uk ). This patches the TLS chain for YouTube's API. iOS 10
High-resolution playback (2K/4K) is often inconsistent, and UI elements like thumbnails or the account channel list may break. Missing Features:
: This community-driven platform maintains a list of version-specific IPAs for legacy hardware. How to Install and Fix YouTube on iOS 10.3.4
This is the only "set it and forget it" method.