Even if you successfully install the app, it might immediately tell you to update. To fix this:
On jailbroken devices, you can use these tweaks from the cydia.bag-xml.com repo to "spoof" your version or repair the API connection. Youtube Ipa For Ios 7.1 2 Download
If all else fails, use Safari. You can navigate to m.youtube.com and use the "Add to Home Screen" feature to create a shortcut that acts like a web-app. Even if you successfully install the app, it
Offers a library of various YouTube IPAs specifically archived for legacy iOS users. Youtube Ipa For Ios 7.1 2 Download