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

iPhone 4 / iPhone 4S iPhone 4 / 4S

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Old 09-29-2010, 07:35   #16 (permalink)
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100% downgrade Done iphone 4 3GS 4.1 to 4.0.1


Quote:
Originally Posted by umeshgaire View Post
The iOS can be downgraded if SHSH is on file however the 5.14 modem firmware can NOT be downgraded, the only exception is with iPhone 3G 5.8 bootloader.

The only way to unlock 5.14 modem firmware is if your iPhone and contract is paid in full and the original carrier is NOT AT&T. eg if your iPhone is from Orange UK, phone customer service, ask for unlock, and then the next time you sync with iTunes it will say "Congratulations, your iPhone is unlocked"

This method does NOT work for Model "LL" iPhones but feel free to give AT&T hell if you have the urge to vent. [IMG]http://tapa****/mu/29054a22-de24-4fb1.jpg[/IMG]
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Old 10-01-2010, 07:07   #17 (permalink)
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time wastage
leave it.....
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Old 10-01-2010, 07:17   #18 (permalink)
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yea no network for me as well , Try using redsn0w_mac_0.9.6b1 for mac , works great .
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