The HTC-manufactured Google Nexus 9 has just been on the market for just a couple of weeks. As you may recall, Google promised to deliver the newest version of the Android with encryption turned on by default. Luckily, the strengthened security policies didn’t cause any additional trouble with rooting, as the Volantiswas quickly rooted by XDA Senior Recognized Developer Chainfire.
With working root, the only thing that was left was a custom recovery. This problem has been solved by the TeamWin Lead Developer and recovery guru, the XDA Senior Recognized Developer Dees_Troy. TWRP 18.104.22.168 handles Android 5.0 Lollipop and its new features perfectly. The new version of TWRP will now automatically decrypt the encrypted partition using the “default_password” or prompt for a password if it has been changed. Dees_Troy implemented the most recent AOSP code into his project and fixed small but annoying things like how cache wiping used to take a long time and exFAT issues.
As for now, due to required device-specific proprietary libraries to make the Lollipop decrypt work properly, 22.214.171.124 version is available only for the Nexus 6 and the Nexus 9. Other devices require lots of work, so we should expect the updated versions at the later point.