In the first part,
we talked about the jailbreak and troubleshooting of the iPhone 3GS /
4, iPad 1 and iPod Touch 3G/4G. As promised, now I will address
specifically the iPad 2 3G.
Basically, if you have an iPad 2 3G, the situation is very
complicated for you because a 4.3.4 update to the iOS will mean that
will no longer be able to jailbreak using jailbreakme.com at all. If we
are to believe in Comex’s words, then Apple will certainly block the iOS
4.3.4 exploit from jailbreakme.com 3.0 so a jailbreak possibility
becomes impossible. The biggest problem is that you cannot downgrade to
the 4.3.3 version even if you have SHSH saved on your tablet because the
baseband of the iPad 2 3G will not be downgraded to the value of iOS
4.3.3. As a result, you will receive the 1004 error, the tablet will go
into Recovery Mode and you can’t exit this no matter what program you
are using.
The baseband of the iPad 2 3G tablet runs on the SHSH. This means that at each restore; it generates a random and unique SHSH that iTunes uses to make the baseband’s update/downgrade. As long as Apple has multiple signed SHSHs for a certain baseband, the downgrade/upgrade process is done without problems but when it stops signing, the SHSHs we cannot install that baseband. For example, we can make a restore and a baseband downgrade from IOS 5.0 to IOS 4.3.3 on iPad 2 3G because Apple signs SHSHs for iOS 4.3.3 and the iPad 2 3G but as soon as you get the IOS 4.3.4, Apple will only sign SHSH’s for this version of the iOS.
In conclusion, an update to the iOS 4.3.4 is a definitive step for iPad 2 3G owners and even with the SHSH saved, they will not be able to return to the iOS 4.3.3. Currently, the SHSHs for iOS 4.3.3 for the iPad 2 3G are completely useless but there is a chance to see a method that would allow a iOS downgrade by using them so it’s best to save them. The above explanations don’t apply to the iPad 2 WiFi because this tablet version doesn’t have a baseband and a restore is possible using a SHSH.
iOS 4.3.4
The baseband of the iPad 2 3G tablet runs on the SHSH. This means that at each restore; it generates a random and unique SHSH that iTunes uses to make the baseband’s update/downgrade. As long as Apple has multiple signed SHSHs for a certain baseband, the downgrade/upgrade process is done without problems but when it stops signing, the SHSHs we cannot install that baseband. For example, we can make a restore and a baseband downgrade from IOS 5.0 to IOS 4.3.3 on iPad 2 3G because Apple signs SHSHs for iOS 4.3.3 and the iPad 2 3G but as soon as you get the IOS 4.3.4, Apple will only sign SHSH’s for this version of the iOS.
In conclusion, an update to the iOS 4.3.4 is a definitive step for iPad 2 3G owners and even with the SHSH saved, they will not be able to return to the iOS 4.3.3. Currently, the SHSHs for iOS 4.3.3 for the iPad 2 3G are completely useless but there is a chance to see a method that would allow a iOS downgrade by using them so it’s best to save them. The above explanations don’t apply to the iPad 2 WiFi because this tablet version doesn’t have a baseband and a restore is possible using a SHSH.
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