How to Fix iTunes Error 1002 While Restoring iOS 4.3.3 Custom IPSW?

Hello Rochelle, this error normally occurs when restoring a custom made firmware. Anyway, have you updated your iPhone 3GS to iPad’s 06.15.00 baseband and you were restoring custom iOS 4.3.3 IPSW using Sn0wbreeze? If that’s the case, then I would recommend you to use the latest version of Sn0wbreeze and create a new custom firmware. You can download Sn0wbreeze 2.7.3 from here, and you can get the stock iOS 4.3.3 form this blog post. The step by step guide on how to jailbreak iOS 4.3.3 using Sn0wbreeze can be found here.

On the other hand, of you haven’t upgraded the baseband of your iPhone to iPad’s 6.15.00, and then I would recommend you to create a signed iOS 4.3.3 using iFaith SHSH Blobs Dumper (as Apple already stopped signing iOS 4.3.3 firmware) and restore it to your iPhone through iTunes (if you are getting the same error on restore stock iOS 4.3.3 then this could be a hardware failure). If you rely on unlock, then you don’t have to worry because you can still jailbreak and unlock your iPhone using Redsn0w and Ultrasn0w even after restoring it to stock iOS 4.3.3 by updating its baseband to iPad 6.15.00. You can refer on this tutorial on how to jailbreak iOS 4.3.3 using Redsn0w. Then the tutorial on how to unlock iPhone using Ultrasn0w 1.2.3 can be found here. Or, if you don’t care about unlocking and just want jailbreak, then the easiest and fastest way to jailbreak an iPhone on iOS 4.3.3 is through JailbreakMe 3.0.