MuscleNerd did it again. It took 24 hours to jailbreak the iPad ( well first stages of a full jailbreaking process ) and now, 24 hours after iPhone OS 4.0 was released to devs, he already managed to jailbreak it. In the vid above you can see Veency running on iPhone OS 4.0 and you can also see Cydia installed on the phone. However, MuscleNerd advise us to avoid betas as they are very buggy…