iPhone 4s not recognized at all by PC after update

Question

iPhone 4S

5세대 iPhone. 수리는 간단하며 스크루드라이버, 비집는 도구 그리고 인내가 필요합니다. GSM/CDMA / 16, 32, 또는 64 GB / 검정색 또는 흰색.

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Miguel @newtonian

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게시일: 2015년 3월 14일

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iPhone 4s not recognized at all by PC after update

Hello everyone.

I got an iphone 4s from a friend. He told me the iphone got stuck on the apple logo after updating to the new ios. I've tried to connect it to my PC, but the computer is not recognizing the device at all, not in device manager, itunes, anywhere.

The iphone is responsive to both the sleep/wake button and the home button, but only shows the apple logo for about 10 seconds and turns off.

Is it at all possible that an update could have damaged the logic board and the iphone is now beyond repair?

Thank you very much in advance for any help.

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Brad @brad80191 평판: 24.4k 35 16 30 · Answer 1 · 2015-03-14T08:50:47-07:00

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Brad @brad80191

평판: 24.4k

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게시일: 2015년 3월 14일

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Charge iPhone and then perform DFU Mode Restore with iTunes on computer. Connect iPhone to Wall Charger for at least 10 minutes to charge. Then open iTunes on computer, connect iPhone to computer, hold both home and power buttons for exactly 10 seconds release power button, but keep holding home button for about 20 more seconds until iTunes recognizes iPhone in Recovery Mode. Restore the iPhone.

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Thanks Brad, but it's not working. The phone only shows the apple logo and shuts off. My PC doesn't detect it. Seems it is completely fried.

Miguel 의 2015년 3월 14일

What else can I do? Open it maybe? What I should be looking for?

Thanks!

Miguel 의 2015년 3월 14일

No matter what I do, the phone only shows the apple logo. Is that a sign of a bad logic board? Thanks.

Miguel 의 2015년 3월 18일

Please help.