📅 August 30, 2010

HOW TO: Downgrade Your iPhone/iPod Touch/iPad IF You Have Your SHSH Blobs Saved [Mac and Windows]

brief explanation of SHSH blobs, and how to restore your iPhone/iPod Touch/iPad once you have them on file…

There’s a lot of confusion about the SHSH blobs, and once saved ( see tutorial here and here ), how can we use them to downgrade our iOS devices. The problem is, that iOS devices have to communicate with Apple’s servers before allowing the installation of any version of firmware (restore or update ) .With the release of Firmware 3.1.3, Apple’s server has stopped certifying all previous firmware and this makes it impossible to restore your device to a previous release. The certification is done through 3 files called IBSSIBEC and ECID that, once signed, they are a kind of “green light” to install the firmware through iTunes.

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📅 September 15, 2009

HowTo: How to Downgrade iPhone 3Gs From Firmware 3.1 to 3.0 For Users Who Have Saved The ECID via Cydia

iPhone 3GS have to communicate with Apple’s servers before allowing the installation of any version of firmware (restore or update ) .With the release of Firmware 3.1, Apple’s server has stopped certifying all previous firmware and this makes it impossible to restore your terminal to version 3.0 or 3.0.1. The certification is done through 3 files called IBSS, IBEC and ECID that, once signed, are a kind of “green light” to install the firmware through iTunes.

In the last days, FSMdotCOM offered a brief explanation of the problems regarding jailbreaking, iPhone firmware 3.1 and iPhone 3Gs. Apple and the iPhone evolved a lot in the past couple of years and they learned a couple of things when it comes to software protection against jailbreaking.

iPhone 3GS have to communicate with Apple’s servers before allowing the installation of any version of firmware (restore or update ) .With the release of Firmware 3.1, Apple’s server has stopped certifying all previous firmware and this makes it impossible to restore your terminal to version 3.0 or 3.0.1. The certification is done through 3 files called IBSS, IBEC and ECID that, once signed, are a kind of “green light” to install the firmware through iTunes.

Continue reading “HowTo: How to Downgrade iPhone 3Gs From Firmware 3.1 to 3.0 For Users Who Have Saved The ECID via Cydia”

📅 September 11, 2009

Jailbreak Firmware 3.1 on iPhone 3Gs: Understanding The Problems

First of all you need to understand that Apple knows everything you do with your iPhone and iTunes. Yeah, not such a major privacy invasion as it sounds but still… No matter if you do a upgrade, recovery, downgrade of the firmware, the entire process starts to communicate with the Apple servers via iTunes. In case of the iPhone 3Gs, iTunes sends to Apple a certificate in order for the phone to be verified. If, during this “test” , the certificate fails to respond clearly , the server tells iTunes to return an error. If the certificate responds as it should, the firmware is installed flawlessly

You already know that when it comes to jailbreking the iPhone 3Gs, you wont have nothing but headaches. ECID file, IBSS and IBEC files… omg the pain!!! To tell you the truth i wasn’t quite sure what all this means , but i had a vague idea. I asked around, and decided to pass the informations to you guys, as simple and clear as possible.

As you know, i dont have a 3Gs yet, and if this BS will continue, and jailbreaking will continue to be such a hustle, i will pass this model and ill wait for the next model: 64 gigs. I really can live without upgrading ( the only feature that excites me, is that 3Gs can (natively) video record ). Anyway, all the information you will find in this article is related ONLY to the iPhone 3Gs. If you own a EDGE/3G you can chill and just read this for your own knowledge.

iPhone_3Gs_jailbreak

Continue reading “Jailbreak Firmware 3.1 on iPhone 3Gs: Understanding The Problems”