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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 12-15-2010, 16:13   #1 (permalink)
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Help my 3gs went blank & dfu mode after update & unlock with 4.2.1 redsnow 0.9.6b.5


How to recover my iphone that went blank after i updated with 4.2.1 firmware & i installed cydia & ipad baseband.Now it is on dfu mode & no display it is only dectected in itunes.
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Old 12-15-2010, 16:26   #2 (permalink)
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just hold home and power botton in 10 sec and your phone will power on
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Old 12-15-2010, 16:40   #3 (permalink)
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ok will be test.......................................
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Old 12-15-2010, 17:02   #4 (permalink)
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i try but not done only connect sound apper in my laptop
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Old 12-15-2010, 21:06   #5 (permalink)
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Quote:
Originally Posted by surendra777 View Post
How to recover my iphone that went blank after i updated with 4.2.1 firmware & i installed cydia & ipad baseband.Now it is on dfu mode & no display it is only dectected in itunes.
The same problem with me
i can not restore again to the orginal 4.2.1 version

When I click restore goes to white screen
then gives the error in the attached photoerr 28.JPG

We need a solution
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Old 12-15-2010, 21:27   #6 (permalink)
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Just use custom firmware to restore because your modem is 6.15 u can't restore with org firmware. First step is use red snow for dfu mode and than flash with custom firmware
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Old 12-15-2010, 21:43   #7 (permalink)
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i met the same problem. check that the battrey is well charged when flashing the baseband. Once the process is finished leave it at least to show the apple logo again.

I am assuming you already flashed it with the original 4.2.1 and got the 1015 error before this. Then chose the option that it is a new model.

IF you did not (something that the redsnow detects anyway) the 3GS can behave really strange such as but not limited to...

1. display goes haywire after a certain amount of time
2. switching off
3. gets into DFU mode on its own

Once the baseband is flashed PROPERLY just use cusom firmware and boot tethered at the end.
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Old 12-15-2010, 22:36   #8 (permalink)
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dfu mode solution

In my condition all phone was new brand...
but i have to take risk....
opened the phone...
disconnected bettery...
waited for 1-2 minute...
again attached....
restored with custome 4.2.1....
everything is like charm.........

second option is to wait for get ur bettery full drain....
if u dnt wanna open the phone....
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Old 12-15-2010, 22:36   #9 (permalink)
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i try flash with custom firmware

Did not succeed
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Old 12-16-2010, 13:58   #10 (permalink)
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i think itune host server :
74.208.10.249 gs.apple.com
74.208.10.249 gs.apple.com
127.0.0.1 gs.apple.com
is back, i downgrade all iphone who don't like downgraded with success
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Old 12-16-2010, 14:34   #11 (permalink)
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The solution is easy,do the hardware reset,open the phone,remove the battery then wait 15 seconds then put it back in and the issue (error 28) will go away.
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