Downgrade iPhone 3G Baseband 5.08.01(OS 3.1 B) to 4.26.08

9 July 2009 by Vinay 28 Comments

Good news for the peoples who accidentally upgraded their iPhone 3G to OS 3.1 beta. iPhone OS 3.1 Beta updates your current baseband to 5.08.01which is unlockable at the moment because Ultrasn0w is not supported by the latest baseband. Bigboss released Fyzzyband 3.1b1-1. Fuzzyband Downgrader is a safer iPhone 3G Baseband Downgrader as this one detects your baseband and bootloader version and does the wright thing first. More general 3GFuzzyband Downgrader detects your bootloader and baseband and downgrade it with a simple click. Fuzzyband Downgrader available in ICY and Cydia just refresh your sources and search n install the application.

latest version of Fuzzyband Downgrader has two features Upgrades / Downgrades baseband to 4.26.08 for unlocking with the ultrasn0w tool released by the iPhone Dev-Team. If you are on a lower baseband than 4.26.08 Upgrading will put the 4.26.08 baseband from 3.0 on the modem so that ultrasn0w may be installed from Cydia. Downgrading works from any version greater than 4.26.08 (currently 5.08.01 is the newest version available, found in 3.1 beta 1). It will put your baseband back at version 4.26.08 which is the current unlockable version by Ultrasn0w.

Downgrading only works on phones that have the 05.08 (5.8) Bootloader from the factory. This is a very limited number of phones that were released in the first few weeks of the 3G production cycle. If you do not know your bootloader then you can run Fuzzyband and it will report the version number for you. In my case i have bootloader 5.09 but my baseband is 4.26.08 and i m very concerned about baseband updates. So after the OS 3.1 final release I’ll wait for the Dev team release.

28 Comments »

Amber said:

Has anyone had success with downgrading the 3.0 with a Bootloader 5.09 & Baseband of 4.26.08?

Also, when is the OS 3.1 supposed to be released?

Thanks!

# 15 July 2009 at 9:34 pm

ala'a said:

is it safe??
anyone tried it??
does it work on iPhone 2G?3G??

# 26 July 2009 at 6:59 pm

Jon said:

I found out that this also helps when trying to downgrade to 3.0 and you get no signal because of the updated baseband. thanks for the help!!!

# 7 August 2009 at 8:46 pm

shobhit said:

i have boot loader 5.09 and baseband 05.11.04 running on 3.0.1 fw.

I dont want to unlock it but it has been jailbroken. I am getting no service issue, any suggestions as to how i can use my iphone with my original sim with the above?

Its freaking *** that now my iphone is just a stupid itouch without the actual network signals.

Pls help thanx.

# 13 August 2009 at 12:19 pm

Vinay (author) said:

@ Shobhit Dude you just messed with your baseband and thats really bad for you. There is no tool at the moment to downgrade your Baseband on Bootloader 5.9 Now wait for 3.1 release and Dev team release. My prediction is they will release updated version of RedSn0w to jailbreak only and for unlocking they’ll release a updated version of Pwnage tool (Custom Firmware). Now pray from god that Dev team find any loophole in latest baseband otherwise your phone is no more than a iPod..

# 13 August 2009 at 5:53 pm

Adam Bradley said:

@shobhit just do a restore in itunes and jailbreak it again.

# 17 August 2009 at 9:31 pm

Angel said:

I waiting to tool to downgrade baseband(5.11.04) to bootloader 6.02 for my iPhone 3G 3.1…when release that?????
Please tell me…

# 22 September 2009 at 9:40 pm

Inluke said:

Hi i tried to jail break my iphone 3g, it had 3.1 from the store. i got the Pwnage tool to wrok but it dont change my band to lower. its stil on 05.11.07 =( so i cant unlock it.
Anyone knows when its going to be posible?
thx

# 29 September 2009 at 4:01 am

Hamed said:

and me too Angel, i waiting to tools to downgrade BB (5.11.07) via Bootloader 6.02, My Iphone is 3g os 3.1

# 29 September 2009 at 11:40 am

bhavin gandhi said:

I waiting to tool to downgrade baseband(5.11.04) to bootloader 6.02 for my iPhone 3G 3.1…when release that?????
Please tell me…

same problem

# 29 September 2009 at 12:20 pm

gaksu said:

Same here too,

I have upgraded to 3.1 and it’s locked. I downgraded to 3.0 but baseband is still stucked at 5.11.07. Fuzzyband does not work due to my 6.4 baseband ootloader. Now phone is just became an ipod with apps. Any suggestions?

# 1 October 2009 at 1:52 am

Andre said:

For god sake, we need a tool to downgrade devices with bootloaders of 6.02! Any updtaes on this?? Tks a lot

# 1 October 2009 at 10:39 am

Shashank said:

I waiting to tool to downgrade baseband(5.11.04) to bootloader 6.04 for my iPhone 3G os 3.1…when release that?????
Please tell me…

# 2 October 2009 at 4:35 pm

Jawad said:

ive also got my iphone 3g 3.1 locked with baseband 5.11.07 and boot loader 6.02.. fuzzy band cant help..
is there any way we can get outa it? i mean either downgradin or unlocking at 3.1?

# 3 October 2009 at 2:36 pm

Andre said:

Guys, are we screwed? Is there a chance that my 6.02 bootloader iphone might be nothing more that an ipod due to this freaking update? I bouhgt this on ebay on monday, i enjoyed for a 2 or 3 days….never knew that i should never do an update on itunes… damn…

# 3 October 2009 at 9:26 pm

Raj said:

I have also got the same problem , upgraded Iphone 3G to 3.1 OS. I am able to downgrade to 3.0 and jailbreak. Unlock doesnt work as it has bootloader 6.04 and baseband 5.11.07. Waiting for some a solution.

Appretiate whoever working on it.

# 5 October 2009 at 6:35 am

Christy said:

Thats amazing! How the heck did u manage to do that? Have 5.09 bootloader and still have 04/26/08 BB?! >< im like just waiting for anything to get my iphone 3g unlocked. I have 3.0 or 3.1 bootloader [i found a way to hange them] 5.09 bootloader and 05/11/07 BB.

# 7 October 2009 at 2:26 pm

jumbo said:

I have a iphone 3g with 3.0 OS,when i try to upload a music to itunes,
accedentally i upgrade my iphone to 3.1.Now my Iphone is LOCK,and is working even i insert a simcard,cannot recognise any simcard i inserted.Please tell what im going to do?and hiw to unlock my iphone?
It is possible to unlock again?

PLEASE HELP ME…..

THANKS
JUMBO

# 8 October 2009 at 2:28 am

spawnjack said:

PLEASE PLEASE PLEASE SOMEONE WORK ON A UNLOCK FOR 6.02!!

# 9 October 2009 at 10:09 pm

chris said:

Hey Guys,

got the same problem, my iphone was stuck , so i reloaded the software via itunes…
Now it jailbreaked with 3.1 , baseband 5.11.07 and bootloader 6.02 !

My question is: Can we use a additional sim (Gevey Sim, Turbo Sim, Rebel Sim) for unlock. In that case its worth just paying 10 Bucks/Euro’s for such a simcard… Then just wait till a new version of ultrasnow comes out!

Is there anybody who tested the gevey sim?

regards,
chris

# 13 October 2009 at 9:46 pm

amere said:

please dev team the whole world is depending on u all for the 06.02 downgrader u never let us down b4 and i no u will not this time thanks.

# 13 October 2009 at 10:01 pm

MANAN said:

hey i have iphone 3g
baseband 5.11.07
bootloader 6.02
what am i suppose to do in order for me to use it unlocked. Help PLZZZZZ

# 18 October 2009 at 10:20 pm

Prasad said:

I am also waiting for the DEV team to come up with an unlock for the bootloader version 6.02 as my iphone 3g is pretty much just a ipod touch for quite sometime now. Please please come up with the same.

# 21 October 2009 at 4:16 pm

Arshad said:

Im also waiting for the dev team for an unlock for bootloader 6.02 Plz do something in this regard as its been so long.

# 24 October 2009 at 5:00 pm

i-Alex said:

i have iphone 3G version 2.2.1 before using fuzzy band.. after i installed fuzzyband and accidentally upgraded the the base band to 4.26.08 and asked me to up grade my version to 3.0 to be able use ultrasnow..and my bootloader is accidentally changed to 6.04,, now my spec is Bootloader 6.04 with Baseband upgraded to 4.26.08 and ultrasnow isntalled..
its work for any GSM card but not for UMTS..

# 27 October 2009 at 2:55 pm

dontknow said:

IPhone 3G – 16GB – Black
————————–
Firmware Version: 3.1.2
Baseband Version: 05.11.07
Bootloader Version: 06.02

Any solutions to unlock, downgrade or something ????????????

# 28 October 2009 at 6:30 am

amrinder said:

i was update my iphone 3g with the help of itunes and after that it got locked
the update was iPhone2,1_3.1.2_7D11_Restorewhat will i do to make my iphone again unlocked
please help

# 28 October 2009 at 7:22 am

123123123123 said:

LOL, THANKS, oh my god, it saved my life, oh, man, now my iphone 3g is working the wi-fi, thaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaanks

# 18 December 2009 at 1:09 pm