Save IOS SHSH 4.2b3 in case

We recommend saving the IOS SHSH 4.2b3 (beta3).

Probably not essential, but right now you need to jailbreak 4.2 IOS is untethered. Comex is working on a new hack to jailbreak untethered, and surely will find it soon, meanwhile only be tethered to a jailbreak because as you know the exploit of Limera1n is tethered (to the 4.1 hack was applied comex).

So better safe than sorry.

To save you need to do with TinyUmbrella.

You can download the latest version of TinyUmbrella from its official website.