Since YouTube’s API now blocks old versions, “extra quality” (e.g., 1080p60, 1440p, 4K) is not available through the official app. Possible workarounds (none perfect):
Official YouTube Red (Premium) requires $13.99/month. With the modded IPA, background play works out of the box. Close your phone, lock the screen, or switch to Twitter—the audio continues. youtube+ipa+for+ios+1034+extra+quality
Blocks video ads, banner ads, and sponsored cards. Because version 1034 pre-dates Google’s most aggressive "ad black screen" countermeasures, ad blocking is 100% effective. Extra Quality: This usually refers to features that