An untethered jailbreak for Apple A5 chipset powered iOS devices (namely iPhone 4S and iPad 2) has finally been achieved according to pod2g's most recent blog entry. He updated his blog yesterday stating he had hit a stumbling block but would update us today again. He's kept true to his word and let us know today that he's overcome the cache issue and achieved an untether.

OK, figured it out, the A5 cache is not a problem anymore. I sorted it out by doing the untether in a single thread and by flushing all the dcache then all the icache in a row at a strategical point of the process.

Saurik helped with launchd boot process so they're one step closer to a stable jailbreak. Props to pod2g and saurik for all their hard work. I can't wait to jailbreak my iPhone 4S as soon as a tool is updated and released. Anyone else jumping for joy at this news? I know I am! Check the source link for all the details.

Source: pod2g