Team C+D have released a new version of psardumper that decrypts the latest 3.30 firmware.
Here a poem snipped out of the release

:
3.30 Decrypter!
* From Team Create+Destroy.. *
Some thought we failed - or had disappeared,
But $ony beware - your last hour is near.
In spite protections and multiple locks,
In spite busy lifes and - unwashed - socks,
For you to enjoy but for $ony to fear,
3.30 decrypter is ready, so cheer!
Please note that this will
NOT allow 3.30 users to downgrade or run homebrew.