Last chance for you. Apple is still signing iOS 8.4. So, Upgrade/Downgrade to iOS 8.4 & Cydia download with TaiG or PP jailbreak. Hurry up.!
Tag: ios 8.4.1 jailbreak
iOS 8.4.1 has released. Apple has successfully patched jailbreak & avoid Cydia download for new version. So, you cannot use TaiG or PP tool for jailbreak iOS 8.4.1 version right now.