Apple Blocks 3GS Downgrades, iTunes 9 is Safe, 3.1GM Vulnerable

Apple Blocks 3GS Downgrades, iTunes 9 is Safe, 3.1GM Vulnerable

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Since the release of iTunes 9 and the iPhone OS 3.1 yesterday the Dev Teams have been busy analyzing the software to find changes.

Here is the current status...

- MuscleNerd confirms that it is safe to update to iTunes 9 for those who have already jailbroken/unlocked.

- saurik has noted that Apple has blocked the downgrade to 3.0 for iPhone 3GS users. This means that he can no longer signature hashes for users. Users who have saved their ECID SHSH information will have to wait for someone to build something to use that information. We will post more explaining this in the near future. In the meanwhile you may want to look at this (Windows, Mac) tutorial.

- chronicdev has confirmed that the iPhone 3.1GM is still vulnerable

- the new firmware does include a baseband upgrade which will cause you to lose your unlock unless you are on the iPhone 2G or have an iPhone 3G with the 5.8 bootloader. If you do have the 5.8 bootloader please note that no tools are available to perform the baseband downgrade yet.

- it is NOT okay to update to 3.1 if you are jailbroken or might want to jailbreak in the near future. WAIT!

Apple Blocks 3GS Downgrades, iTunes 9 is Safe, 3.1GM Vulnerable
GP - September 16, 2009 at 10:52pm
IPHONE CONFIGURATION UTILITY VERSION 2.1 My main concern is, I have a jailbroken 3G S should I have installed it? What effects will this have on my iPhone being that it is jailbroken? I also have iTunes 9 as long as I don\'t do any 3.1 update to my phone I should be ok, right. thank you..
GP - September 16, 2009 at 10:21pm
i have a J/Unlocked iPhone 3gs with3.01. i downloaded iTune 9 and it is working fine: QUESTION: can I download and install the \" iPhone Configuration Utility Version 2.1\" or will it cause problems with my Jailbreak and Unlocked iPhone.
danikno1 - September 13, 2009 at 1:25pm
I have a 3gs on 3.0 FW and I successfully JB\'d & unlocked. After JB\'g, I wasn\'t aware I needed to reset the phone before adding other cydia applications. My phone started crashing, but I was able to get it to come back up once. Since then I can\'t get it to boot up properly. It just keeps displaying the apple logo and the screen goes black. I\'ve tried to run redsnow, but keep ending with an error message toward the end about an incorrect block count for file data_a rk.plist (it should be 1 insteas of 0) Invalid index key (4, 1) ** Rebuilding Catalog B-tree. disk0s2s1: alignment error. ** The volume Data could not be repaired . Mounting rootfs as read-write... Mounting devfs... Mounting disk0s2s1... ERROR! It stops at this point and staying at the program screen and does nothing further. Please Help. I have not updated through I tunes because I don\'t want to increase the baseband. My phone is not operable. Please assist???
hp - September 23, 2009 at 6:10am
hey, got the same probleme, do you have a solution for that? thanks a lot!!
Derk - September 28, 2009 at 2:37pm
Same problem.....need a solution!
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