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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 09-17-2011, 07:46   #1 (permalink)
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has anybody successfully downgraded 3gs to 4.1 lately??? or is it just me...


this is not my first time to downgrade ipod touch, iphone 3g and 3gs to 4.1 version...



but with this 3gs i seem to have a problem... it wont downgrade to 4.1.. error 20 appears and sometimes error 1604... i already tried using ireb, redsn0w and other tricks but still with no success... flashing with custom firmware also doesnt help...



but if ill try to flash the phone with 4.3.5 everything seems ok...



anymore advice please???
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Old 09-17-2011, 07:54   #2 (permalink)
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delete hosts file
flash original 4.1 in dfu mode
flash original 4.1 again without disconnecting (important)
error occurs
use tiny umbrella to kick out of error

Thank me!!
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Old 09-17-2011, 07:57   #3 (permalink)
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yes bro
restore ur host to original
put unit in DFU
and restore with OFW 4.1
error 3194 occurs
use tinyumbrella to EXIT recovery...........



....................
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Old 09-17-2011, 07:59   #4 (permalink)
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hey buddy

Quote:
Originally Posted by unlockgod View Post
delete hosts file
flash original 4.1 in dfu mode
flash original 4.1 again without disconnecting (important)
error occurs
use tiny umbrella to kick out of error

Thank me!!
hey buddy
can u help in unlocking 3gs with baseband 05.16.02
os 4.3.3
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Old 09-17-2011, 08:03   #5 (permalink)
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many times br.

first restore your iphone3gs to 4.1
(then u got error 1015 if your procedure is down grade)
then kick to tiny umbrella

your problem SOlve!!
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Old 09-17-2011, 08:07   #6 (permalink)
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hmmm.. can i get a copy of a clean host file please??
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Old 09-17-2011, 08:25   #7 (permalink)
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HOST from win7

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP ad******* to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
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Old 09-17-2011, 08:28   #8 (permalink)
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tried restoring the 3gs with a newly formatted laptop but still the same... and just to let you know guys that this is just the only 3gs that im having a hard time downgrading... could it be that there's something wrong with this unit???
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Old 09-17-2011, 09:44   #9 (permalink)
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Quote:
Originally Posted by ryumahon View Post
tried restoring the 3gs with a newly formatted laptop but still the same... and just to let you know guys that this is just the only 3gs that im having a hard time downgrading... could it be that there's something wrong with this unit???
change a pc ..it will work on another.
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Old 09-17-2011, 11:45   #10 (permalink)
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just delte bottom line in host file and
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Old 09-17-2011, 17:59   #11 (permalink)
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Quote:
Originally Posted by unlockgod View Post
delete hosts file
flash original 4.1 in dfu mode
flash original 4.1 again without disconnecting (important)
error occurs
use tiny umbrella to kick out of error

Thank me!!
Success with this method. I used White Satan's JCT to delete host file.

Thanks for the sharing the guide.

Good Luck TS

Best Regards
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Old 09-21-2011, 12:50   #12 (permalink)
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yes i did it iphone 3gs downgrade 4.1

my iphone 3gs first i updated to 4.3.5 with itune
it went to emergency mode.. then i did tetherad jailbreak with 4.3.5.. with .. redsn0w_win_0.9.8b7c but it not worked that could not change baseband and
every time when i power off i need to use redsn0w and run '' just boot tethered right now''

but dont worry use itune to restore ipsw 4.1 itune will restore
if u get eny error use ''ireb'' software and click recovery mode loop fixer
it will turn on emergency mode.. its good sign.. open (redsn0w_win_0.9.6rc16)
brooze ipsw 4.1 then click ''install cydia'' and ''install ipad baseband''
dont loose ur patience
just sit and eat popcorn it will take some time..
and every thing will be fine after that u can install ultrasnow using wifi
while installing cydia.. or u can use '' i fun box '' for unlocking 3gs manually
without wifi..

if eny one not succes then repete my procdure im sure u can do it...
u can also call me +919088784801
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Old 09-21-2011, 23:51   #13 (permalink)
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solved it 4 me me on 10 sets (3gs) last night changed back to 4.1 but baseband stays same 6.15 but that loop has gone
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Old 09-22-2011, 00:11   #14 (permalink)
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you maybe have new boot specifically mc model 3gs. I successfully restore mine. using ifaith I created customs ipsw using my back up .shsh from tinyumbrela. using RPS to supply power on my phone. I successfully downgrade to 4.1 ang get my phone back alive from black dfu status after many tries ang attempt to recover my phone.
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Old 09-22-2011, 00:39   #15 (permalink)
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i tested with 3gs after make ireb and restore with 4.1 its ok with many iphons
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