iPhone 3G Downgrade Baseband 05.11.07 to 04.26.08 Firmware 3.1 - GSM-Forum

shaibaz786 · 09-28-2009, 12:02

In response to my previous post of unlocking iPhone 3G, 2G on OS 3.1, I had few people who had broken Rule no.1 (which says that don’t upgrade to OS 3.1 from iTunes) set by Dev Team. For those, here is a solution, downgrade the Baseband.
Pre-requisite: To downgrade your baseband from 05.11.07 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1 by following guide unlocking iPhone 3G, 2G on OS 3.1.
Step 1: Go to “Cydia” and Search for “Fuzzyband” and then install it.
Step 2: Start Fuzzyboard app and click on Downgrade button to start downgrading your Baseband from 05.11.07 to 04.26.08.

Step 4: Now, your iPhone 3G is having an unlockable baseband. Now proceed with Unlocking with Ultrasn0w.

NOTE: Downgrading of baseband will only work on phones that have the 05.08 (5.8) Bootloader. If you do not know your bootloader, run Fuzzyband and it will report the version to you.
Feel free to follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

quickgsm · 09-28-2009, 12:20

good info thanks man !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

alahmed · 09-28-2009, 12:41

yap Nice info ,,,,,,,,,,let me test it and i will post the result if positive.......

caremobiles · 09-28-2009, 12:43

Is this working perfect?Can any boby tested practically?

alahmed · 09-28-2009, 12:46

yap Nice info ,,,,,,,,,,let me test it and i will post the result if positive.......

ms_ahmed · 09-28-2009, 13:11

Not working this will work with 05.08 bl only

top50gsm · 09-28-2009, 13:21

i test it but not work evry day -no service-;;,

mobile_juice · 09-28-2009, 13:36

Quote:

Originally Posted by shaibaz786

In response to my previous post of unlocking iPhone 3G, 2G on OS 3.1, I had few people who had broken Rule no.1 (which says that don’t upgrade to OS 3.1 from iTunes) set by Dev Team. For those, here is a solution, downgrade the Baseband.
Pre-requisite: To downgrade your baseband from 05.11.07 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1 by following guide unlocking iPhone 3G, 2G on OS 3.1.
Step 1: Go to “Cydia” and Search for “Fuzzyband” and then install it.
Step 2: Start Fuzzyboard app and click on Downgrade button to start downgrading your Baseband from 05.11.07 to 04.26.08.

Step 4: Now, your iPhone 3G is having an unlockable baseband. Now proceed with Unlocking with Ultrasn0w.

NOTE: Downgrading of baseband will only work on phones that have the 05.08 (5.8) Bootloader. If you do not know your bootloader, run Fuzzyband and it will report the version to you.
Feel free to follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

sir can u help me how to jail break this version 3.1 and install cyindia installer ?

anisking · 09-28-2009, 14:12

not supported for this version
it work only with 05.08 modem

emad1999 · 09-28-2009, 16:30

not supported for 05.08

nicacel · 09-28-2009, 17:06

95% dont have 5.08 bl, only lucky people can do it

com999 · 09-30-2009, 18:12

yes brother ru 1000% righteeeeeeeeeeeeeee

Quote:

Originally Posted by nicacel

95% dont have 5.08 bl, only lucky people can do it

com999

55533faisal · 09-30-2009, 20:11

i Test it But no service

boby_gsmdku2 · 10-01-2009, 21:32

tnxs to you my iphone its working perfect \:d/

my modem was 5.11 and now is 4.26 ,bootloader 5.08 any way tnx again

alahmed · 10-01-2009, 21:35

is that window version?????????????

09-28-2009, 12:02	#1 (permalink)
shaibaz786 No Life Poster Join Date: Dec 2008 Location: hyderabad Posts: 669 Member: 932122 Status: Offline Sonork: hack it Thanks Meter: 650	iPhone 3G Downgrade Baseband 05.11.07 to 04.26.08 Firmware 3.1 In response to my previous post of unlocking iPhone 3G, 2G on OS 3.1, I had few people who had broken Rule no.1 (which says that don’t upgrade to OS 3.1 from iTunes) set by Dev Team. For those, here is a solution, downgrade the Baseband. Pre-requisite: To downgrade your baseband from 05.11.07 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1 by following guide unlocking iPhone 3G, 2G on OS 3.1. Step 1: Go to “Cydia” and Search for “Fuzzyband” and then install it. Step 2: Start Fuzzyboard app and click on Downgrade button to start downgrading your Baseband from 05.11.07 to 04.26.08. Step 4: Now, your iPhone 3G is having an unlockable baseband. Now proceed with Unlocking with Ultrasn0w. NOTE: Downgrading of baseband will only work on phones that have the 05.08 (5.8) Bootloader. If you do not know your bootloader, run Fuzzyband and it will report the version to you. Feel free to follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
BlackSn0w is live* Now Unlock IPhone 3G, 3GS 3.1.2 and baseband 05.11.07 !!!!!	Gsm Lab	iPhone 4 / iPhone 4S	268	08-01-2010 19:25
Now Unlock Iphone 3.1.2 and baseband 05.11.07 "blacksn0w is live"	TUR@N ALAM	iPhone 2 / iPhone 3G / iPhone 3GS	0	11-03-2009 18:37
Now Unlock Iphone 3.1.2 and baseband 05.11.07 "blacksn0w is live"	Ja\/\/aD	Service Products News & Updates	0	11-03-2009 18:23
Hellp need ! iPhone 3G with bootloader 06.02 downgrade to 04.26.08	ikalce	iPhone 2 / iPhone 3G / iPhone 3GS	3	10-14-2009 15:07
I PHONE 3G firmware 04.26.08,version 3.0(7A341) to unlock-help	zonetrichur	iPhone 2 / iPhone 3G / iPhone 3GS	4	06-26-2009 15:30

09-28-2009, 12:20	#2 (permalink)
quickgsm No Life Poster Join Date: Dec 2006 Location: ! Age: 39 Posts: 1,293 Member: 414755 Status: Offline Sonork: quickgsm Thanks Meter: 389	good info thanks man !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

09-28-2009, 12:41	#3 (permalink)
alahmed Freak Poster Join Date: Oct 2008 Location: London, UK Posts: 147 Member: 886346 Status: Offline Sonork: 100.1582496 Thanks Meter: 12	yap Nice info ,,,,,,,,,,let me test it and i will post the result if positive.......

09-28-2009, 12:43	#4 (permalink)
caremobiles No Life Poster Join Date: Aug 2006 Location: On Earth Posts: 1,240 Member: 332724 Status: Offline Sonork: 100.1605077 Thanks Meter: 231	Is this working perfect?Can any boby tested practically?

09-28-2009, 12:46	#5 (permalink)
alahmed Freak Poster Join Date: Oct 2008 Location: London, UK Posts: 147 Member: 886346 Status: Offline Sonork: 100.1582496 Thanks Meter: 12	yap Nice info ,,,,,,,,,,let me test it and i will post the result if positive.......

09-28-2009, 13:11	#6 (permalink)
ms_ahmed Freak Poster Join Date: Aug 2008 Location: Bangalore, Karnataka, india Age: 37 Posts: 370 Member: 845234 Status: Offline Thanks Meter: 364	Not working this will work with 05.08 bl only

09-28-2009, 13:21	#7 (permalink)
top50gsm Freak Poster Join Date: Dec 2005 Location: gallerie7-tunis Posts: 181 Member: 211028 Status: Offline Sonork: 100.1587652 Thanks Meter: 23	i test it but not work evry day -no service-;;,

09-28-2009, 14:12	#9 (permalink)
anisking No Life Poster Join Date: Mar 2006 Location: In your Mind Age: 41 Posts: 751 Member: 252220 Status: Offline Sonork: 100.1606995 Thanks Meter: 195	not supported for this version it work only with 05.08 modem

09-28-2009, 16:30	#10 (permalink)
emad1999 Freak Poster Join Date: Jan 2004 Age: 57 Posts: 192 Member: 50105 Status: Offline Thanks Meter: 8	not supported for 05.08

09-28-2009, 17:06	#11 (permalink)
nicacel No Life Poster Join Date: Jan 2005 Location: Land of Lakes and Volcanoes Age: 51 Posts: 1,233 Member: 111014 Status: Offline Thanks Meter: 132	95% dont have 5.08 bl, only lucky people can do it

09-30-2009, 20:11	#13 (permalink)
55533faisal Freak Poster Join Date: Apr 2008 Location: india Age: 38 Posts: 261 Member: 748991 Status: Offline Thanks Meter: 175	i Test it But no service

10-01-2009, 21:32	#14 (permalink)
boby_gsmdku2 Junior Member Join Date: Jun 2006 Posts: 17 Member: 300549 Status: Offline Thanks Meter: 1	tnxs to you my iphone its working perfect \:d/ my modem was 5.11 and now is 4.26 ,bootloader 5.08 any way tnx again

10-01-2009, 21:35	#15 (permalink)
alahmed Freak Poster Join Date: Oct 2008 Location: London, UK Posts: 147 Member: 886346 Status: Offline Sonork: 100.1582496 Thanks Meter: 12	is that window version?????????????