I'm new to saving SHSH blobs, but currently my iPhone 4 is sitting on iOS 4.3.5 non-jailbroken and unlocked via Gevey Sim Pro for T-Mobile. I was wondering is there any insured way to successfully downgrade back to 4.3.5 if I feel I do not like 5.01 since it has battery problems, bugs, etc. Thanks for any replies! (: