The iPhone Dev-Team has updated RedSn0w with the ability to save iPhone unlock tickets (SAM unlock).
redsn0w 0.9.10b8 adds the ability to backup arbitrary directories or files from your device into a zip file on your Mac or PC. The new button is Extras->Even More->Backup and it requires your device to be jailbroken with the afc2 service enabled (most jailbreaks include that). By default it will backup your activation records from /var/root/Library/Lockdown, which is useful for everyone taking advantage of today’s SAM unlock using Loktar_Sun’s trick
Version 0.9.10b7 of redsn0w adds a collection of useful features: It finally implements the corona-A5 jailbreak for iPhone4S and iPad2 devices still at 5.0.1. It can also re-install that jailbreak for those who accidentally uninstalled the untether. When stitching an IPSW, it can now grab your blobs directly from Cydia. It now shows a lot more info about your device (for instance, whether your iPhone3G has the vulnerable baseband boot loader, or whether your iPhone3GS has the old exploitable bootrom. (And the next new feature to be added will be built-in restore support, to provide an alternative to iTunes restores.)
Previously you needed to use Absinthe to jailbreak the iPhone 4S and iPad 2.
The iPhone Dev-Team has released RedSn0w 0.9.10b5 which includes another fix for iBooks DRM by planetbeing.
As always, you can simply run the new redns0w over your current jailbreak, just make sure to uncheck Cydia. To fix iBooks and launchctl errors you can also simply install new version of Corona from Cydia.