how to downgrade from iOS 5.0.1 to 4.3.5

[yogi.techsavvy]

i have updated my iphone 3GS to iOS 5.0.1 now its responding to late, hangs somtime while playibg games it really irritates me... plz help me out how can i downgrade it to iOS 4.3.5 or 4.3.3..........
FYI: its not jailbroken

 

[TriJetHero]

i have updated my iphone 3GS to iOS 5.0.1 now its responding to late, hangs somtime while playibg games it really irritates me... plz help me out how can i downgrade it to iOS 4.3.5 or 4.3.3..........
FYI: its not jailbroken

Do you have your SHSH/blobs saved?

If not downgrade is not possible.

 

[noble.Guy]

Sorry can not help you because I'm jailbroken, but I think you have to contact Apple, about 5.0.1 is it that bad? I have 3GS and I have an intention to upgrade ! maybe your post helped me to stop.