Does apple still signs iOS 4.1 for iPhone 3GS.?
I have iPhone 3GS , iOS 4.1 , bb 6.15, new bootrom.
I have only shsh blobs for iOS 6.1.3. So I can only upgrade to That iOS .
My questions are;
1.How to restore to iOS 6.1.3 using that blob?
2.Then I know the procedure to jailbreak(tethered) . After that can I unlock using ultrasn0w? (need to do anychanges in bb For unlock ?)
3.If apple signs iOS 4.1 still, then can I revert back to iOS 4.1 from 6.1.3 (if I don't like 6.1.3) if yes means then the procedure Plzz ...
Thanks in advance ...