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How To Downgrade iPhone 3GS IOS 4.2.1

by Alvin on December 14, 2010

Accidentally updated your iPhone 3GS to IOS 4.2.1 through iTunes? Although IOS 4.2.1 is still jailbreakable using redsn0w, but the jailbreak for iPhone 3GS with new bootrom is tethered only. Every time it restarts, you need to run redsn0w to boot it again. This can be very troublesome especially when you’re working or studying. You […]

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Continue Reading 0 comments }Jailbreak & Unlock

If you’ve updated your iPhone baseband to version 05.11.07, you will lose the carrier unlock probably permanent. How do I know if it’s being updated? On the iPhone, navigate to Settings, General, about and check the baseband firmware. And if you perform the iPhone restore or update directly with 3.1/3.1.2 original firmware from Apple through […]

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Continue Reading 3 comments }Jailbreak & Unlock

How to Jailbreak your iPhone 3.1.2 using Blackra1n on Windows

October 11, 2009
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George Hotz had released his latest jailbreak tool called blackra1n, which can jailbreak all iPhone generation including 2G, 3G and 3GS on firmware 3.1.2. Blackra1n supports iPhone 3.1 out of the box jailbreak and only takes about 30 seconds to jailbreak the devices. Currently, it does not support baseband 05.11.07 3G and 3GS unlock as […]

How to Completely Uninstall iTunes on Windows

October 1, 2009
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Recently, I’ve successfully downgraded my iPhone 3GS to firmware 3.0 and I also downgraded iTunes 9 to 8.2 for purplera1n to work. In order to install iTunes 8.2, I have to completely uninstall iTunes 9 on my PC. Therefore, it may be useful if I write this guide for those who also wish to downgrade […]

How to Downgrade iPhone 3GS 3.1

September 28, 2009
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Previously, I’ve downgraded my iPhone 3GS from firmware 3.1 to 3.0. However, my Singtel sim card was not detected and the iPhone 3GS has totally no Singtel carrier network. But, now I manage to fix it. If you’re having the same issue, here’s the solution. Please note that your device/iPhone 3GS must has a 3.0 […]

I’ve Downgraded my iPhone 3GS 3.1

September 24, 2009
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I’d successfully downgraded my factory unlocked iPhone 3GS from firmware 3.1 to 3.0 with baseband version 05.11.07. But, my Singtel sim card somehow does not have any network coverage. iTunes 9 successfully restored my iPhone 3GS to firmware 3.0 but with error 1015 and iPhone is showing iTunes with USB cable. Then, I jailbreak it […]