Searching for a "YouTube IPA for iOS 10" with "extra quality" typically refers to finding a compatible or a tweaked client that allows the app to function on older hardware where the official App Store version is no longer supported. Status of YouTube on iOS 10
Even with an "Extra Quality" IPA, old software APIs break frequently. If your app installs but fails to load videos, try these fixes: 1. Changing the Info.plist (Version Spoofing) youtube+ipa+for+ios+1034+extra+quality
Once installed, the app might still tell you to update. You need to trick YouTube's servers into thinking your app is modern by editing its configuration file. Open on your jailbroken device. Searching for a "YouTube IPA for iOS 10"