• WARNING: Once you've installed the iPad baseband, you must NEVER restore from iTunes, or your iPhone will be soft-bricked. But in case you do, check the Error#1015 page to find instructions to repair it.

• Models: iPhone 3G (A1241)
• Problem: Your baseband is flashed to the iPad baseband (6.15.00), and iTunes was unable to update it.
• Solution 1: Update to 4.2.1 using a custom firmware that matches your baseband.
• Solution 2: Downgrade to 3.1.3.

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1. Download these files needed, and put them in one folder for easy access later.

{{Enter PWNED DFU Redsnow}}

1. Download and extract Redsn0w.
2. Open Redsnow.
3. Click Browse, and find the Original 4.2.1 IPSW (not custom). Then click Next.
4. Unselect all options, and only set Just enter pwned DFU right now. Then click Next.
5. Plug in your device, hold the power button, and {{Enter DFU Mode}}
6. Follow the instructions on Redsnow to enter DFU Mode. (if your home or power button is broken, you will need to Enter DFU Mode#Broken Buttons)

{{Install Custom IPSW|}} 1.

1. Your iPhone has been repaired.

• After this, if your iPhone 3G has a no service issue, use this guide.](https://www.youtube.com/watch?v=hHkip546yns)
• If you don't have an AT&T SIM card, you will need to "hacktivate" your device,, or borrow one from a friend, or get a prepaid card.