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iPhone4S是第五代iPhone。网络制式为GSM/CDMA ,存储容量有8GB、16GB、32GB、64GB可选,机身颜色有黑色、白色可选。维修iPhone4S是容易的,需要耐心,用到的工具有螺丝刀、撬棒等。

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How to downgrade iPhone device

I want to ask about my iPhone 4S, current version is IOS9 ,and then how I can downgrade to IOS6 . It is due to when I upgrade IOS 9 my IPhone will become lag so I want to downgrade . Got someone got solution to help me ?

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was it io6 before update , ? you would of needed to save the shsh blobs otherwise its highly unlikely its going to work

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The only say you can downgrade is if you have saved signed SHSH blobs from before for that iOS version like seller1978 said.

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I not backup SHSH ? How to fix

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You need to wait for you current firmware to be jailbreakable and you can use tools to help trick the device into thinking ios6 is signed.

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But I don't want jailbreak

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You have to first jailbreak the current firmware and then downgrade to ios6 which will erase your jailbreak and you will be left with stock ios6. Here is a link to odysseusOTA the tool used to achieve the downgrade. Keep in mind that you will need to be on a jailbreakable firmware. http://www.redmondpie.com/odysseusota-do...

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Did you mean jailbreak first and then clean the jailbreak?

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yes exactly. the jailbreak will be gone at the end.

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