Please note only recommend this tutorial to people who have the iPhone in a drawer for updating and release need to use it, do so at your own risk, modify the baseband, which has no reverse gear and is easily detectable by Apple, plus from now on you will fail every time you want to upgrade to an official firmware, you can only upgrade to custom firmware.
Do not do this process on an iPhone 4 or run the risk of spoiling. SOLO FOR 3G IPHONE 3G
Said this started:
If you have one of the following baseband do not need this process, just install Cydia ultrasn0w:
04.26.08
05.11.07
05.12.01
05.13.04
06.15.00
Only needed if you have:
05.14
05.15
This is the tutorial for Windpws, 0.9.6b5 Redsn0w need, download it here .
Download 3.2.2 IPSW iPad clicking here .
4.2.1 IPSW and your iPhone, download it here .
The first thing you have to do is update your iPhone from iTunes to version 4.2.1 official will have to do with SHIFT + Restore and the firmware you downloaded above
Once done open Redsn0w and creates a custom iPhone firmware with baseband iPad (beginning of the iPad IPSW).
Select the firmware 4.2.1 on your iPhone
Select to install Cydia, install the baseband of IPAD and extra options you want.
(I do not recommend multi-tasking on the iPhone 3G)
Follow the steps to put it in recovery mode.
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Once this is done will appear in iTunes that has detected an iPhone in recovery mode and ask if you want to restore.
Restore with custom firmware that we have prepared by pressing SHIFT + Restore
Once this process, our phone will start with the baseband 15/06/1900
We went into Cydia and installed and ready ultrasn0w, our free iPhone.
EYE: a jailbreak tethered (tied), you must restart with Redsn0w time.
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