Pod2g has posted on his blog to answer some questions about the iPhone 4S and iPad 2 untethered jailbreak. How could pod2g have an untethered 4S and dev teams still haven't released tools to achieve this at home ? The exploit I used to inject the untethering files to the 4S relies on having a developer account, and can't be released publicly. It's the same reason why @MuscleNerd has an iPad 2 tethered jailbreak but couldn't distribute it. So, we need to find a distributable exploit to remount the system partition read/write and to set Corona files at the correct places. Why A4 version of Corona was easier to release ? Because a tethered jailbreak is a good way to install Corona! Why don't you do a tethered jailbreak then ? A tethered jailbreak also relies on an exploitable vulnerability that we still haven't found yet ! Earlier this week, pod2g posted that he had made good progress on the jailbreak for A5 devices and said with some luck we could expect a release in a week. pod2g's blog.