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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 06-28-2010, 07:25   #1 (permalink)
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Question iphone 3Gs version 4.0 ( OLD BOOT ) possibl to donwgrade?


Hello everyone, Anyone can tell me on how this possible to be downgrade to 3.1.3 to be able to unlock?

I have iphon 3Gs MB ( OLD BOOT ) with 4.0 version and just want to make sure is possible to dowgrade to 3.1.3 without any SHSH files? thank you all
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Old 06-28-2010, 07:34   #2 (permalink)
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umm, why not just try?

nothing would happen if it wont' work it will give you error number if worked then it will continue
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Old 06-28-2010, 07:44   #3 (permalink)
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Quote:
Originally Posted by mymiela0419 View Post
Hello everyone, Anyone can tell me on how this possible to be downgrade to 3.1.3 to be able to unlock?

I have iphon 3Gs MB ( OLD BOOT ) with 4.0 version and just want to make sure is possible to dowgrade to 3.1.3 without any SHSH files? thank you all
look arround no need to downgrade for unlock..
jailbread with snobreez and make unlock..
as unlock is suported upto 5.13 modem firmware..
and u cant donwgrad with SHSH saved.
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Old 06-28-2010, 23:26   #4 (permalink)
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Originally Posted by uqbah View Post
look arround no need to downgrade for unlock..
jailbread with snobreez and make unlock..
as unlock is suported upto 5.13 modem firmware..
and u cant donwgrad with SHSH saved.
ok ok ... how it work ......???
bat what not work for me ................
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Old 06-28-2010, 23:28   #5 (permalink)
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ook arround no need to downgrade for unlock..
jailbread with snobreez and make unlock..


?????? im hawe old boot 3gs bat thease metod dont work
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Old 06-28-2010, 23:30   #6 (permalink)
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Try this if it is old boot:

http://forum.gsmhosting.com/vbb/f456...video-1032843/
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Old 06-28-2010, 23:37   #7 (permalink)
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im hawe error 1600 in dfu mode and erro 1604 in ecoveri mod
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Old 06-28-2010, 23:39   #8 (permalink)
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This step is applicable to iPhone 3GS, iPod touch 3G and iPod touch 2G (MC model) which have their SHSH blobs (ECID SHSH) saved on Cydia for the firmware you

my phone dont hawe thea ....

look arround no need to downgrade for unlock..
jailbread with snobreez and make unlock..


thease medot step by step .....
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Old 06-29-2010, 03:11   #9 (permalink)
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Quote:
Originally Posted by mymiela0419 View Post
Hello everyone, Anyone can tell me on how this possible to be downgrade to 3.1.3 to be able to unlock?

I have iphon 3Gs MB ( OLD BOOT ) with 4.0 version and just want to make sure is possible to dowgrade to 3.1.3 without any SHSH files? thank you all
yes you can even new boot MC and old boot possble to downgrade...

you need iH8sn0w - iREB V3.1.2... to exit recovery mode
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