Hey guys, what an accomplishment - I've been waiting for a new jailbreak

However, I followed the instructions, see Mesquito with the Asimov quote, but nothing happens. It just says "Jailbreaking - Please wait".
A factory reset did not help. I am using a Gen 11 PW with the 5.17.1.0.3 FW. The device has not been jailbroken before. Can anyone point me in the right direction? Any help would be greatly appreciated. Thanks