is it possible to down grade i phone 3gs ? - GSM-Forum

WIDE · 10-21-2011, 23:32

is it possible to down grade i phone 3gs from ios 5.0 to 4.1 ?

voltran2008 · 10-21-2011, 23:36

yes, apple still signs 4.1 firmware for 3g and 3gs...
make sure your hosts file is clean

cal_guy · 10-22-2011, 03:11

- Use ireb4 put the iphone in DFU mode

- Open tinyumbrella and start the tss server

- Open itunes and restore with version 4.1 custom. It will give you error 1015 and it will be in DFU mode

- Close everything and also close the timumbrella

- Goto C:\WINDOWS\system32\drivers\etc and move hosts and hosts.umbrella files to new folder

- Start iTunes and restore 4.1 stock firmware (not custom) and this time it will give error 1015 and it goes in recovery mode

- Move the hosts and hosts.umbrella files back

- Open timumbrella and exit recovery. It will bring your iphone back.

- Now you have 4.1 stuck at activation, just jailbreak it with RedSn0w 0.9.6b5, install iPad baseband i.e., 6.15 and you will end up getting cydia

- Unlock it with Ultrsn0w.

eurotel919 · 10-22-2011, 07:05

U can downgrade to ios 4.1 directly

riajul1988 · 10-22-2011, 07:26

Quote:

Originally Posted by WIDE

is it possible to down grade i phone 3gs from ios 5.0 to 4.1 ?

go hare http://forum.gsmhosting.com/vbb/f456...1-3gs-1365067/

deep_6111 · 10-23-2011, 19:20

I uses your steps to downgrade my 3GS and I successfully downgraded it from iOS 4.3.5 to 4.1 but the problem is that the baseband do not change it's still 5.16.02. Tell me how fix this

LoveLess · 10-23-2011, 19:31

Quote:

Originally Posted by deep_6111

I uses your steps to downgrade my 3GS and I successfully downgraded it from iOS 4.3.5 to 4.1 but the problem is that the baseband do not change it's still 5.16.02. Tell me how fix this

u cant dowgrade ur modem baseband.. if ur phone has simlock update ur modem sw to 6.15 then unlock it..

10-21-2011, 23:32	#1 (permalink)
WIDE No Life Poster Join Date: Jun 2003 Posts: 702 Member: 30754 Status: Offline Thanks Meter: 9	is it possible to down grade i phone 3gs ? is it possible to down grade i phone 3gs from ios 5.0 to 4.1 ?

10-22-2011, 07:05	#4 (permalink)
eurotel919 Crazy Poster Join Date: Sep 2008 Location: calicut,kerala,india Posts: 57 Member: 865586 Status: Offline Thanks Meter: 7	Yes, U can downgrade to ios 4.1 directly

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10-21-2011, 23:36	#2 (permalink)
voltran2008 No Life Poster Join Date: Sep 2008 Location: Space Age: 49 Posts: 1,728 Member: 861795 Status: Offline Thanks Meter: 1,275	yes, apple still signs 4.1 firmware for 3g and 3gs... make sure your hosts file is clean

10-22-2011, 03:11	#3 (permalink)
cal_guy No Life Poster Join Date: Oct 2010 Location: Toronto, Canada Posts: 948 Member: 1430995 Status: Offline Sonork: 100.1613203 Thanks Meter: 312	- Use ireb4 put the iphone in DFU mode - Open tinyumbrella and start the tss server - Open itunes and restore with version 4.1 custom. It will give you error 1015 and it will be in DFU mode - Close everything and also close the timumbrella - Goto C:\WINDOWS\system32\drivers\etc and move hosts and hosts.umbrella files to new folder - Start iTunes and restore 4.1 stock firmware (not custom) and this time it will give error 1015 and it goes in recovery mode - Move the hosts and hosts.umbrella files back - Open timumbrella and exit recovery. It will bring your iphone back. - Now you have 4.1 stuck at activation, just jailbreak it with RedSn0w 0.9.6b5, install iPad baseband i.e., 6.15 and you will end up getting cydia - Unlock it with Ultrsn0w.

10-23-2011, 19:20	#6 (permalink)
deep_6111 Registered User Join Date: Dec 2007 Location: Chandigarh Posts: 343 Member: 655438 Status: Offline Thanks Meter: 146	I uses your steps to downgrade my 3GS and I successfully downgraded it from iOS 4.3.5 to 4.1 but the problem is that the baseband do not change it's still 5.16.02. Tell me how fix this