How do I jailbreak my iPhone 3GS (new bootrom) on iOS 4.3.1 / 4.3.2 / 4.3.3?

This article is for the iPhone 3GS with a new bootrom only. If you have another device, then this article is not for you.

Either you can create a custom firmware with sn0wbreeze[1] (on Windows) or PwnageTool[2] (on Mac), pwn your device (with same tool or with redsn0w) and install it with iTunes.

If you have 4.3.1 or 4.3.2 or 4.3.3 already installed just run redsn0w[3] to install Cydia.

Please note that if you update to 4.3.x directly, without a custom firmware, you update your baseband. Any baseband version higher than 05.13.04 (was included in iOS 4.0.2), causes you to lose the possibility to unlock. So only upgrade with a custom firmware.


  1. Where do I download sn0wbreeze?
  2. Where do I download PwnageTool?
  3. Where do I download redsn0w?
last edit: 2011-07-19

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