iPhone 3GS Jailbroken on iOS 4.1 - Need to restore, how?

[Doju]

I have an iPhone 3GS, new bootrom, on iOS 4.1 and need to restore my iPhone and re-jailbreak. I don't want to upgrade to iOS 4.2, as there is no jailbreak for iOS 4.2 for iPhone 3GS with the new bootrom (right?).

How do I do this? I tried downloading from http://www.iphoneheat.com/2010/09/download-ios-4-1-firmware-for-iphone-and-ipod-touch/ and when I selected it for restore it wouldn't accept it.

How do I go about doing this?

 

[PsstGreek]

You can only restore if you have the SHSH saved for 4.1

 

[Doju]

I do.

 

[PsstGreek]

Ok. Download TinyUmbrella: http://thefirmwareumbrella.blogspot.com/

Once installed hit Enter Recovery > Run TSS Server.

iTunes will close > Reopen iTunes > Shift+Restore (Windows) or Option+Restore (Mac) > Choose the 3GS 4.1 ipsw > Restore.

 

[Myzhi]

Ok. Download TinyUmbrella: http://thefirmwareumbrella.blogspot.com/

Once installed hit Enter Recovery > Run TSS Server.

iTunes will close > Reopen iTunes > Shift+Restore (Windows) or Option+Restore (Mac) > Choose the 3GS 4.1 ipsw > Restore.

Before running TSS server mode, you must use Tinymbrella to save the 4.1 SHSH files locally on your HDD.