According to recent tweets by Comex, man behind the famous Spirit tool, the next version of Spirit will jailbreak iOS 4.0 and iOS 4.0.1 on all iDevices. If you are on iOS 4 or iOS 4.0.1, all you need now is to save your SHSH blobs so that you can downgrade to older firmware versions in future. SHSH blobs for iOS 4.0 and 4.0.1 are same as the only difference is the size of signal bars.
Here are few tweets from Comex stating that an updated version of Spirit tool would be made public soon.
For those who don't know, Spirit tool is a userland jailbreak from Comex for all iDevices. The upcoming version of Spirit will support jailbreak for iPhone 4 as well. It seems that Dev-Team and Comex are working together on iPhone 4 jailbreak and unlock. Comex's Spirit tool will handle iPhone 4 jailbreak and Dev-Team's Ultrasn0w tool would be iPhone 4 unlocking solution.
Keep your fingers crossed! We will update you as soon as Comex releases his universal jailbreak tool which is expected in a week or so. In the mean, you may go through following guides about iOS 4.1 / iOS 4.0.1 jailbreak and unlock.
- Unlock iOS 4.0.1 on iPhone 3G with Ultrasn0w 0.93
- Jailbreak iOS 4.0.1 on iPhone 3G with Redsn0w 0.9.5b5-5
- Jailbreak iOS 4.1 on iPhone 3G & iPod Touch 2G with Redsn0w 0.9.5b5-5