What iOS version shall I Downgrade my iPhone 3G to?

[edholmes]

Basically I'm getting a new one soon but this one (jailbroken iOS 4.2.1) is EXTREMELY SLOW. So i will live without the jailbreak for a few months but which iOS version is best for this on an iPhone 3G?

 

[batting1000]

Basically I'm getting a new one soon but this one (jailbroken iOS 4.2.1) is EXTREMELY SLOW. So i will live without the jailbreak for a few months but which iOS version is best for this on an iPhone 3G?

You can't downgrade to a lower OS version unless you have SHSH blobs saved for a previous OS version as Apple is no longer signing previous versions of iOS.

 

[PsstGreek]

3.1.3 would be the best option for you.

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You can't downgrade to a lower OS version unless you have SHSH blobs saved for a previous OS version as Apple is no longer signing previous versions of iOS.

With a 3G yes, the OP can. The 3G can be downgraded to any firmware, 3.1.3 or later.

 

[batting1000]

3.1.3 would be the best option for you.

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With a 3G yes, the OP can. The 3G can be downgraded to any firmware, 3.1.3 or later.

But I thought Apple wasn't signing old OS versions anymore, regardless of the device model.

 

[edholmes]

But I thought Apple wasn't signing old OS versions anymore, regardless of the device model.

They don't but ive done it before and with the help of TinyUmbrella and/or RecBoot, ive managed