Pod2g, the developer behind the untethered iOS 5 jailbreak, Corona, has posted a short FAQ regarding the release of an untethered A5 jailbreak. He mentions that the current method he is using requires users to have a developer account with Apple, so it can’t be released publicly—MuscleNerd’s iPad 2 jailbreak is in a similar situation. Since the developer hasn’t yet found a exploitable vulnerability, even a tethered jailbreak isn’t possible at this time. It’s not the best news, although we’re glad that some progress is being made. As usual, there is still no ETA, but please don’t bother the developers for one!
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.