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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone 4 / 4S

iPhone 4 / 4S iPhone 4 / 4S

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Old 03-26-2011, 08:43   #1 (permalink)
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Iphone 3GS version 4.1 update to 4.2.1

Hi!

How can i update iphone 3GS version 4.1 BB6.15 to 4.2.1 version . Iphone is MC modell.
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Old 03-26-2011, 09:10   #2 (permalink)
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If i updated with custom firmware to 4.3 , phone is always in dfu mode, and i cant set to normal mode!
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Old 03-26-2011, 10:08   #3 (permalink)
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Did you use 4.2.1 CFW? Was the the original FW of iPhone when you receive?
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