As the limera1n jailbreak is still in beta. it is recommended not to use the beta and wait for a stable limera1n release or GreenPois0n.
Chornic Dev Team posted a new piece on their blog confirming they are not going to release another tool.
Thanks to the irresponsible antics of geohot, we will have to delay the release of greenpois0n (new ETA = as soon as possible), so that we have time to clean up his little mess and integrate the exploit he uses in limera1n into greenpois0n. This way, we can save SHAtter for future devices that may still be vulnerable to it.
We know that this is not what some people want to hear, but due to geohot needing to feed his ego (as usual) and revealing his limera1n exploit, we do not have any other responsible options.