Install the latest compatible YouTube version from your history.
If you already have a legacy version of YouTube installed but it’s asking for an update, you can "trick" it into thinking it’s a newer version. : Open Cydia and download Filza File Manager . youtube ipa for ios 935 exclusive
(available via Cydia for jailbroken devices) can sometimes restore functionality to old versions of the official app. App Store Version History Install the latest compatible YouTube version from your