How do I find out whether I have SHSH blobs?

[ratboy90]

Do I have to manually save them or do they automatically get saved on my mac when I update my iPhone?

 

[eastercat]

If you don't jb your phone, you need to d/l tiny umbrella and click on the save shsh button.

 

[ratboy90]

If you don't jb your phone, you need to d/l tiny umbrella and click on the save shsh button.

Help me out. I'm on iOS 4.3 and want to downgrade to 4.2.1

I've never jailbroken my iPhone before. Can I downgrade or is that impossible now?

 

[gngan]

Help me out. I'm on iOS 4.3 and want to downgrade to 4.2.1

I've never jailbroken my iPhone before. Can I downgrade or is that impossible now?

No, you can't. Do more research on this topic.

 

[heisenberg123]

Help me out. I'm on iOS 4.3 and want to downgrade to 4.2.1

I've never jailbroken my iPhone before. Can I downgrade or is that impossible now?

cant do it, you would of had to saved your blobs with tiny umbrella back when 4.2.1 was still being signed by apple