IPSW Question

[Wicked1]

I am JB on 4.3.3 but if I have my original 4.0.1 ipsw file, can I install this and go back to the original iPhone 4 iOS ?

I am guessing not because Apple does not recognize this signature file anymore?

 

[Intell]

You can only if you have your SHSH blobs for iOS 4.0.1. If you don't, then you cannot.

 

[Wicked1]

What is an SHSH blob? I JB using www.jailbreakme.com this time around, as I was on 4.2.1 on my old phone but had to restore it as Apple was replacing it, and when they gave me the new one it was 4.3.3 already?

 

[Intell]

Its best to use a search engine of your choice to learn about SHSH blobs.

 

[Crystal-RX]

What is an SHSH blob? I JB using www.jailbreakme.com this time around, as I was on 4.2.1 on my old phone but had to restore it as Apple was replacing it, and when they gave me the new one it was 4.3.3 already?

Since your phone has 4.3.3, it is perfect to jailbreak it with jailbreakme.com. You don't even need to hook it up to your computer.

 

[HellKatzX]

What is an SHSH blob? I JB using www.jailbreakme.com this time around, as I was on 4.2.1 on my old phone but had to restore it as Apple was replacing it, and when they gave me the new one it was 4.3.3 already?

an SHSH blob is someone who eats too many twinkies and lives in their mother's basement

 

[eastercat]

Open tiny umbrella in your computer and get your blobs. Whatever blobs it retrieves is what you can install. 3G/3GS has a little more flexibility, but not by much.

I am JB on 4.3.3 but if I have my original 4.0.1 ipsw file, can I install this and go back to the original iPhone 4 iOS ?

I am guessing not because Apple does not recognize this signature file anymore?