Well I'm still in the same boat, I can't update to iOS 5.0.1. its driving me nuts not being able to do this. So if SHSH is uploaded to the current version you have, and I never had any iOS version higher than 4.3.3 what the hell is stoping me from updating now?
Note: Now that I think about it, I've also had to have tiny-umbrella running to do even a restore to my current version, even than sometimes I get an error which is connected with trying to downgrade my phone from 5.0+ firmware. Never understood that as its never been updated bast 4.2.1 (Until last Thursday (March 8th 2012) when I did a 4.3.3 update)