Downgrade/backup help

[Yobemal]

Hey, I've recently changed operator for my iPhone 4 and in order to make the change succesfull, I need to restore my iPhone.

But as of now, I got 4.3.3 (with jailbreak) and if I do the restore in iTunes, it will automaticly update my firmware(?).

Is it any way I can restore it, without updating, or after I've restored it just downgrade back to my 4.3.3? Or simply any other way to do this without beeing stuck at 4.3.5 and not beeing able to jailbreak it again?

[iYeow]

I don't think you need a restore if you change carrier, if it is factory unlocked or you use a Gevey sim to unlock.
If you want to restore to 4.3.3, you need to know if you have 4.3.3 shsh blob, otherwise you will be forced to go to 4.3.5.
Have you check with Tiny Umbrella to find out about your shsh blob ?

[Yobemal]

Hm, i'll do some research intimt umbrella and shsh blob then, thanks =D

[iYeow]

Just do this :
Download the latest version Tiny Umbrella,
Plug iphone in
In adv Tab of TU , select : request shsh blob from Cydia.
Click Save shsh
Look under General Tab for shsh blob.