Trying to get YouTube running on a device with iOS 7.1.2, like an iPhone 4, can be a bit of a challenge. Because Google no longer officially supports such an old operating system, the modern app won't even show up in your App Store updates.
If your device is jailbroken, installing AppSync Unified from the Cydia repo allows you to install IPAs directly without worrying about digital signatures. 4. Bypassing the "Update Required" Error Youtube Ipa For Ios 7.1 2 Download
An even older "classic" version often found on sites like the Internet Archive . 2. Where to Download the IPA Trying to get YouTube running on a device with iOS 7