IOS 5.1 Unteathered Jailbreak Status

There's still no working unteathered Jailbreak for IOS 5.1, but a new exploit discovered yesterday makes it possible to downgrade to 5.0 (SHSH blobs required).  This is great news for the many people who mistakingly upgraded to 5.1 assuming a jailbreak would be released soon.

Here's a table with the current supported jailbreak status.

	4.0.1	4.1.0	4.2.1	4.2.8	4.3.2	4.3.3	4.3.5	5.0.1	5.1
iPhone 3G	U	U	U	N/A	U	U	U	U	U
iPhone 3GS (old bootrom)	U	U	U	U	U	U	U	U	U
iPhone 3GS (new bootrom)	U	U	U	U	U	U	U	U	T
IPhone 4 (GSM)	U	U	U	N/A	U	U	U	U	T
IPhone 4 (CDMA)	N/A	N/A	N/A	U	U	N/A	N/A	U	T
IPhone 4S	N/A	N/A	N/A	N/A	U	N/A	N/A	U	N
IPad 1								U	T
IPad 2								U	N
Ipad 3	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N

IOS 5.1 Update Released

IOS 5.1 was released today, and installing the upgrade will take the baseband to 4.12.01 (iPhone 4) or 2.0.10  (iPhone 4S).  Neither baseband version is currently unlockable nor will they be anytime soon.

Downgrading to IOS 5.0.1 and thus downgrading the baseband is currently possible.  Just hit the "Shift" key while clicking "Restore" in iTunes and select the 5.0.1 firmware (ipsw) file.  By default, iTunes downloads firmware files to C:\users\X\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates

If the files are not there, they may be manually downloaded from www.limera1n.cc

As always, if you want to downgrade to IOS 4.X, you'll need an SHSH blob for your phone created with TinyUmbrella