I (ndmipodtouch) have managed to find the 2.0 decryption key. I had to decrypt the img3/ramdisk and then find the key to access the rootfs. The key is 2cfca55aabb22fde7746e6a034f738b7795458be9902726002 a8341995558990f41e3755
Spread it around!!!!!!
(not to do with dev team at all)
Check out my youtube for more info - http://www.youtube.com/user/ndmipodtouch