Downgrading from iOS 5

[Maxxd]

Yesterday I made a few questions regardless the 4.3.3 iOS version, but looks like the ipod I got it has the 4.3.5, which means, or 4.3.5 or 5.0 both tethered JB.

I'm using tiny umbrella to backup the blobs following this forum tutorial. Problem is, when I check the "Request SHSH option enabled" I get:

10/23/2011 02:18:40.961 Finished saving SHSHs for [Tiago Machado’s iPod]
10/23/2011 02:18:41.051 Caching shsh files...
10/23/2011 02:18:41.071 Found [0] shsh files to cache...
10/23/2011 02:18:41.081 Cached [0] shsh files

and a lot of messages like:

10/23/2011 02:18:40.941 CYDIA DOES NOT HAVE YOUR SHSH FOR iPod4G 4.2.1 (8C148) THERE IS NO WAY FOR YOU TO GET THEM. SORRY. YOU ARE JUST TOO LATE.

So, zero blobs saved.... If I untick the "request" option I get one file (a blob?) saved, but in the "saved shsh blob list" I get

ipod4G 5.0 GM...

Should'nt appear ipod4g 4.3.5 or something... what does this means?

Other thing,

I will install the iOS 5 and then the tethered JB. I'm now saving the SHSH blobs from the 4.3.5 but I have a question, altough I read the FAQ about the matter:

I saw some statements saying that with iOS 5 we can't use SHSH blobs anymore (or at least in a easy manner). This means we can't just download between iOS 5 versions or we can't even downgrade from 5 to 4.x ?

 

[Jmills87]

4.3.5 is no longer being signed so you can't save the SHSH for it anymore. Since the only SHSH you have is for the iOS5 GM firmware, there is no way for you to downgrade unfortunately.

 

[Maxxd]

4.3.5 is no longer being signed so you can't save the SHSH for it anymore. Since the only SHSH you have is for the iOS5 GM firmware, there is no way for you to downgrade unfortunately.

Got it, thanks.