There have been more updates from Pod2g, the famed iOS hacker, on jailbreak for A5 devices. He has reported to have resolved the cache troubles with the iPhone 4S untethered jailbreak. At the same time, the final solution seems to be far.
Though iPhone 4S has been available for about two months, yet it has no jailbreak. This has led to Apple users raising doubts about the possibility of having one.
However, Pod2g kept the jailbreaking community in good humor by successfully testing an untethered jailbreak on an iPod 4G and iPhone 4 running iOS 5.0.1.
Following this, he made some progresses on jailbreaking iPhone 4S even though obstacles such as in the case of the Cortex A9 cache management system were faced. Even after resolving the troubles with respect to cache, he has not given further update on the progress he has made on iPhone 4S.
Meanwhile, MuscleNerd from iPhone Dev-team, who has also been working to provide an untethered jailbreak for iOS5, particularly with A5-powered iDevices, has come up with an important update. MuscleNerd has updated the latest version of Redsn0w 0.9.9b9 to help iPhone 3GS users. This is a tethered jailbreak that doesn't support iPhone 4S or iPad 2. So he is also not giving any further good news for A5 devices.
RedSn0w can be used to jailbreak a range of iOS devices - iPhone 4, iPhone 3GS, iPhone 3G, iPad 1, iPod Touch 4G, iPod Touch 3G and iPod Touch 2G. However, a tethered jailbreak means the user cannot reboot his device without a tethered boot - which requires access to a computer. On the other hand, an untethered jailbreak, which is more desirable, will allow users to reboot the device at will, without needing a computer.
As of now, Apple users are waiting for Pod2G to provide further updates so that they would get a proper untethered jailbreak for A5 devices.