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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone 2 / iPhone 3G / iPhone 3GS

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Old 08-03-2011, 23:32   #1 (permalink)
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iPHONE 3GS/G How to Fix error "20"


Here is my method to fix error code "20" when downgrading your iphone 3GS from 4.3.5 or ur iphone 3g

1. Download Fix Recovery Here The Firmware Umbrella - TinyUmbrella
2. Download zlib1.dll from Here zlib1.dll free download - DLL-files.com
3. If u are fixing iphone 3gs open fixrecovery43 then put ur iphone 3gs in DFU Mode and let the command window do everything for u "NOTE" *If u are fixing iphone 3g open fixrecovery421 then put ur iphone in DFU Mode*
4.If u did everything correctly ur iphone 3g/gs should be in recovery mode "Its normal"
5.Then use iREB RC4 From here iH8sn0w.com | Jailbreak your iPod touches and iPhones
6. Restore to 4.1 then u gonna get error "1015" download Tinyumbrella to kick out of recovery mode The Firmware Umbrella - TinyUmbrella
7. Finally just jailbreak ur iphone and unlock if u want!

**THIS IS ONLY FOR iPHONE 3GS/G**
**ONCE AGAIN I DON'T HOLD RESPONSIBLE FOR ANYTHING, U SHOULD BE OK IF U FOLLOW MY STEPS I HAVE DONE ALREADY MORE THEN 80 PCS WITH THIS PROBLEM**

Last edited by jusmejose; 08-03-2011 at 23:39.
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Old 08-04-2011, 01:25   #2 (permalink)
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thank you thank you
Boss
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Old 08-05-2011, 04:24   #3 (permalink)
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to fix it go to Iphone Error Collection With Solution Unlock iPhone
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Old 08-05-2011, 12:30   #4 (permalink)
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Here is another usefull site link Mobile Phone Repairing Services - Com Tech Mobiles
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Old 08-09-2011, 06:14   #5 (permalink)
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you are the best,,, works
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Old 08-09-2011, 12:56   #6 (permalink)
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just use another computer for error 20..
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Old 08-10-2011, 03:28   #7 (permalink)
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I don't get it. My iphone is already in DFU, so how do start it up normally for being able to open fixrecovery43 before the iphone is in DFU?
I can't get out of it.

Thanks
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Old 08-10-2011, 04:15   #8 (permalink)
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Quote:
Originally Posted by John1235 View Post
I don't get it. My iphone is already in DFU, so how do start it up normally for being able to open fixrecovery43 before the iphone is in DFU?
I can't get out of it.

Thanks
Brother if your iphone is 3gs stock in dfu mode just clear your host file from c/windos/system32/driver/etc. then open itunes chose stock firmware 4.1 then restore if you get at last 1015 error just use tinnyumbrela to exit recovery mode.i have done many more iphone like this....
br......
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Old 08-10-2011, 04:57   #9 (permalink)
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Quote:
Originally Posted by omchocolate View Post
Brother if your iphone is 3gs stock in dfu mode just clear your host file from c/windos/system32/driver/etc. then open itunes chose stock firmware 4.1 then restore if you get at last 1015 error just use tinnyumbrela to exit recovery mode.i have done many more iphone like this....
br......
thanks bro!

i'm now at step 5
5.Then use iREB RC4 From here iH8sn0w.com | Jailbreak your iPod touches and iPhones

What should I do with Ireb? I see different options.
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Old 08-10-2011, 05:15   #10 (permalink)
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Okay i'm screwed...something went wrong with fixrecovery43
"No succesfull firmware download after 60000ms!! Giving up.."
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Old 08-10-2011, 05:53   #11 (permalink)
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use snowbrezee ,,, tested
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Old 08-10-2011, 05:57   #12 (permalink)
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I got it, thanks bro's
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Old 08-15-2011, 19:26   #13 (permalink)
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again u didnt read my TUT.... u git everything good!!
just open now iREB and phone its gonna put in DFU mode then just restore to 4.1 ...
Quote:
Originally Posted by John1235 View Post
Okay i'm screwed...something went wrong with fixrecovery43
"No succesfull firmware download after 60000ms!! Giving up.."
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Old 08-15-2011, 19:28   #14 (permalink)
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Dont SPAM with other websites here!... if u have solution post them here dont post ur lame website!! its easy to fix error "20"
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Old 08-16-2011, 01:58   #15 (permalink)
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thanks bro i am succesful to fix error 20 withe this metode today withe 3gs
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