The iPhone Dev Team quietly released redSn0w 0.9.10b7 for Mac and Windows on Friday. The new version features a few improvements like the addition of the Corona A5 untethered jailbreak for the iPhone 4S and iPad 2. Version 0.9.10b7 also includes a re-install feature for jailbreakers who accidently uninstall the untether, and it can pull your SHSH blobs from the Cydia Store when injecting an IPSW.
RedSn0w 0.9.10b7 also supplies new information about your device. For example the Dev Team blog says it lets you know "whether your iPhone 3GS has the vulnerable baseband boot loader, or whether your iPhone 3GS has the old exploitable bootrom." The Dev Team also noted that "the next new feature to be added will be built-in restore support, to provide an alternative to iTunes restores."
The Corona 5.0.1 Untether package has received another update, this time to correct an iBooks problem where images failed to display or displayed incorrectly after installation. Chronic Dev Team released Corona 5.0.1 Untether to free tethered jailbroken devices including the iPhone 4 from the need to reboot with a computer.
After installing early releases of both Corona and the redsn0w jailbreak for iPhone 4 and 3GS devices, some users had problems with iBooks including a Configuration Error dialog. The latest version of Corona (1.0-7) should fix both iBooks errors and can be installed directly from Cydia on a jailbroken device.
Chronic Dev Team member Dustin Howett posted a video of a jailbroken iPhone 4S on YouTube a few days ago. The video shows the A5 device running Cydia after it has been powered off and on. Howett also proves that Siri still functions by asking her to check the weather.
iPhone hacker and Corona developer pod2g republished the video on his blog saying that a release is only a few days away. It only took pod2g nine days to release his A4 untethered jailbreak after he posted a similar video of a jailbroken iPhone 4 on YouTube.
Chronic Dev Team has released a jailbreak tool on the Cydia app store for those who have already installed a tethered jailbreak on their iOS 5.0.1 devices. Using this tool, called Corona 5.0.1 Untether will modify your iPhone with the same exploits used in redsn0w. Unlike the redsn0w jailbreak process, Corona requires no computer to untether a jailbroken device.
In order to successfully install Corona, your iOS device must already have a tethered jailbreak installed along with iOS 5.0.1. Do not use Corona if you're using a hybrid iOS 5.0/5.0.1 jailbreak! This requires installing and running redsn0w after a clean restore to stock iOS 5.0.1.