Hi guys, iTunes is throwing "iPhone could not be restored, an unknown error occurred (2003)" every time I am trying to connect my iPhone 3GS and downgrade it back to iOS 4.3.3 using TinyUmbrella. What does this mean? Will I be able to downgrade my iPhone or I am stuck at iOS 4.3.5? What should I do? Do I need to download a new TinyUmbrella? Thanks.
Asked by: Bruce from Tampa, Florida
Anyway, you can follow the tutorial posted here on how to downgrade iPhone firmware using TinyUmbrella. If you have encountered iTunes error 3194 then you can follow this guide on how to fix it. Once you have successfully downgraded your iPhone, if you want to jailbreak it then you can use JailbreakMe 3.0 or Redsn0w. The step by step guide on how to jailbreak an iPhone using JailbreakMe can be found on this blog post, while the guide on how to use Redsn0w 0.9.6RC16 is posted from here.