The combined devteam have found the 1.1.3 main filesystem key and are soon going to release a jailbreak method different from the previous method to keep that hole open for the next firmware update.

Extract from hackint0sh posted by MuscleNerd

Hi,

The combined dev teams are proud to announce that we have the main filesystem “asr” key. It can be used by vfdecrypt to produce a mountable dmg. We are working full throttle on the full jailbreak that can be released before sdk comes out.

Code:
% echo -n $key | openssl sha1
aaa5d868ec529fc24575293abbac0a5823a9e5da

(The above isn’t the key; it’s the sha1 of the key)