After installation, go to Settings > General > Device Management on your iOS device and choose "Trust" for the developer profile associated with the app. Official Method for "Extra Quality" Audio
Tools like AltStore or Sideloadly are the most common methods for installing IPA files without jailbreaking your device. apple music ipa download extra quality
Find a verified source like Get iPA iOS or ipa.elshayata.com to download the "extra quality" IPA file. After installation, go to Settings > General >