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You can now downgrade the iPhone OS 4.0 beta baseband 05.13.03 to 04.26.08 by using Fuzzyband Downgrader app. This downgrading app will only work for iPhone 3G with bootloader version 05.08.
The Fuzzyband Downgrader app has a very simple user interface. This app allows you to check your device’s bootloader version, baseband version, and also allows you to downgrade iPhone OS 4.0 beta baseband version.
Downgrade iPhone OS 4.0 beta baseband with Fuzzyband – How to
Follow the step by step guide posted below to downgrade iPhone OS 4.0 beta baseband from 05.13.03 to 04.26.08 using Fuzzyband. If you don’t know the bootloader version of your device then launch the Fuzzyband, it will automatically show you the version of bootloader.
- First you must need to jailbreak your iPhone 3G running iPhone OS 4.0 beta by following the step by step guide posted here
- After successfully jailbreaking your iPhone 3G, launch Cydia from springboard
- Search for Fuzzyband and then click on install
- Now launch Fuzzyband app
- Press Downgrade button to start downgrading your baseband
- Now your device is successfully downgraded to baseband 04.26.08
Is there anyway I can fake my Bootloader? I currently have Bootloader 6.02.
No, I don’t think that there’s anyway to fake Bootloader but you can fake your iPhone’s firmware to OS 3.1.3 by following the step-by-step guide posted here.