Hey guys I'm running 4.2.1 on my iPhone 4 and haven't upgraded at all but yet in Cydia under the header it says "SHSH iOS 4.2.1, 4.3.3, 4.3.4 & 4.3.5"
I did save my shsh for 4.2.1 bu that's it, so by having those under the header does it mean I can downgrade to those other firmwares?? Please help
That is correct. Cydia automatically saves the shsh blobs now and so its been saving all of them even if you have never even used those firmwares before.
Edit: I would recommend not going any higher then 4.3.3 on your I4 as this the last firmware with a good full functional jailbreak. Anything beyond that is gonna be tethered and work like crap in most cases.