i Phone 3GS users can checkout our step by step guide to jailbreak i Phone 3G running i Phone OS 3.0 using Redsn0w for Windows users and this one for Mac users. You can check your baseband (modern firmware) under .3.
1) To jailbreak and install Cydia: – launch redsn0w again Then on your i Phone/i Pad you will see a hardrive icon followed by a bunch of scrolling code and then running pineapples – and its all happy days.
To perform the update of the baseband of i Phone on Mac OS or Windows using redsn0w, follow this tutorial.
Required Downloads: WARNING: Do NOT update your i Phone firmware to 4.2.1 if you are currently on i OS 4.1 and follow this tutorial to upgrade iphone baseband to using pwnagetool unlock edition.
If you are new to this it can well be intimidating with loads of jargon but take your time and go through the information below. But if you still want your baseband preserved but don’t rely on ultrasn0w then you are good to go.
You also can bypass ultrasn0w and just pay out the original carrier to unlock the phone by using an online service like Previously users had to create their own custom IPSW files, but the latest redsnow avoids this.