The new Redsn0w has a way to upgrade to IOS 4.1 without raising the baseband, so we must enter into a special DFU mode l and use a custom firmware that does not raise the baseband. The only problem is that this custom is created from Mac, but I've created custom for your iPhone in Mac, so you can upgrade if baseband and power up the release on your Windows PC.
That is, we mix two methods.
How do we do?
1. Download the original firmware for our phone.
2. Download the custom firmware modified to keep them from the Baseband.
iPhone 3G - Click here
iPhone 3G - Click here
iPhone 4 - Click here
(They are hacktivisms)
3. Download the new version of Redsn0w
... (Continues after the jump)
4. Select the original firmware (the first you downloaded)
5. Press "pwned Just enter DFU mode right now" as it appears in catching up. We will take steps to put the iPhone in DFU mode.
Now your iPhone is vulnerable (must be in DFU mode).
6. Open iTunes, press SHIFT + Restore and choose the custom firmware that you downloaded.
Recognize him because his name called "Current iPhone
7. Let it install the firmware and restarted with Cydia installed and the same baseband that tuvierais before, so I can go to Cydia and install Ultrasn0w to unlock your iPhone.
NOTE:
If you have already upgraded to IOS 4.1 does not unlock your iPhone can not download the baseband, these firmwares are only good if you're in a version earlier than 4.1 iOS
The iPhone 3G is not multitasking because I turned in my view not working properly, using best backgrounder and circuitous.
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