A hacker called pod2g who is known as a “jailbreak guru” by many had recently posted a blog entry in which he announced success in solving the A5 chip cache issue, meaning that an untethered iPhone 4S jailbreak would be a reality in near future.
pod2g recently successfully carried out the latest jailbreak activity with some help from a hacker called Saurik.
pod2g has touch some other points as well.
From his blog:
I discussed with @saurik today about the launchd boot process, and he’s found one missing piece of the puzzle I needed to have a perfectly stable jailbreak. He’s definitly one of the best iOS gurus out there. Thank you saurik!
Thus, not only was the caching issue solved, but another one of the lingering issues that hindered a stable untether had been solved as well.
Source: iDownload Blog