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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 08-31-2012, 10:01   #1 (permalink)
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it is possible downgrade modem firmware 4.12.1


i also have one iphone 4g locked to canadian rogers with firmware 5.1.1 and modem firmware 4.12.1 and therefore cant use any other sim of another carrier....
dont have shsh file saved.....
is it possible to downgrade modem firmaware to 4.10 to enable me to use the phone with gevey sim......
suggestion and help is required from supporters....
need it urgently
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Old 08-31-2012, 10:09   #2 (permalink)
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4g

only factoruyy unlock
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Old 08-31-2012, 10:20   #3 (permalink)
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no way sorry. ıphone 4 and beyond never had baseband downgrade option.

regards
mg
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Old 08-31-2012, 12:31   #4 (permalink)
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Quote:
Originally Posted by mobilehelper View Post
i also have one iphone 4g locked to canadian rogers with firmware 5.1.1 and modem firmware 4.12.1 and therefore cant use any other sim of another carrier....
dont have shsh file saved.....
is it possible to downgrade modem firmaware to 4.10 to enable me to use the phone with gevey sim......
suggestion and help is required from supporters....
need it urgently
You name is mobilehelper and you can't even help your self lol
Search before making threads
It's many time answered.....
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Old 09-03-2012, 03:13   #5 (permalink)
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Quote:
Originally Posted by mobilehelper View Post
i also have one iphone 4g locked to canadian rogers with firmware 5.1.1 and modem firmware 4.12.1 and therefore cant use any other sim of another carrier....
dont have shsh file saved.....
is it possible to downgrade modem firmaware to 4.10 to enable me to use the phone with gevey sim......
suggestion and help is required from supporters....
need it urgently
with sw not possible!
only hardware relacement
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Old 09-03-2012, 05:16   #6 (permalink)
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Downgrading BB applies to iPhone 3G & 3Gs...
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Old 09-03-2012, 05:23   #7 (permalink)
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Donate money to this user
search for factory unlock,thats your only option now
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