How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

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Posted May 24, 2009 at 8:22pm by iClarified

These are instructions on how to downgrade your baseband to 2.28 for iPhone 3Gs with the 5.8 bootloader using Fuzzyband. This will allow you to unlock your iPhone 3G using YellowSn0w.

Fuzzyband is the preferred application for downgrading your baseband since it does version checking, downgrades all versions of baseband from 2.30.03 to 4.26.08 (3.0 beta5), and it reports the current bootloader version on screen.

Step One
Press to launch Cydia from your SpringBoard.

How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Two
Press to select the Sections tab at the bottom of the screen.

Step Three
Press to select System from the list of sections

Step Four
Press to select 3G Fuzzyband Downgrader from the list of packages

Step Five
Press the Install button at the top right of the screen.

Step Six
Press the Confirm button at the top right of the screen to begin installation.

Step Seven
Once installation has completed successfully press the large Return to Cydia button.

Step Eight
Press the Home button to return to your SpringBoard. Notice there is a new application icon titled Fuzzyband. Press to launch the application.

Step Nine
Immediately upon launching the application you will be shown a message stating that Fuzzyband is querying your modem.

Once it completes you will be displayed your Bootloader Version, your Baseband Version and your iPhone OS version.

If you have a bootloader version higher then 5.08 you will not be able to downgrade your baseband and a Not Supported message will be displayed.

If you have the 5.08 bootloader you will be able to downgrade from baseband 2.30 or higher. Press the Downgrade button to begin downgrading your baseband.

Step Ten
Once the downgrade has completed successfully you will be displayed a Done! message saying, "I Haz Downgrade!" and you will be on the 2.28 baseband.

***THANKS: to w1kedZ/DHowett for creating this utility

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wiiguy28 - November 7, 2010 at 2:59pm

can I update my iphone 3g /3.1.2/ 5.11.07 to a later version and still keep my jailbreak and unlock?????please , thank you

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Jay - March 12, 2010 at 7:26pm

Hi, I have a 3g iphone with bootloader 06.2[g2m3s2] and base band ICE2-05.12.01 version 3.1.3 how can i downgrade it?

amyl56 - February 11, 2010 at 11:33am

My Cydia doesn't have Fuzzyband what should I do?

kylie - March 1, 2010 at 9:15am

Go into Cydia>changes>reload Cydia should update and Fuzzyband should be availible

amyl56 - March 5, 2010 at 10:54am

Is it nessesary to have wi-fi service in order to access Cydia?

amyl56 - March 5, 2010 at 10:56am

When I get to changes it is blank.

Shashi - October 1, 2009 at 6:37am

Please let me know if we can degrade the baseband version with bootloader version 05.09 or how do we degrade the bootloader version to 05.08. Please help me !!!!!!!! email - shashi.net@gmail.com

vinod - December 30, 2009 at 6:37pm

Hi, Can any one tell me my wifi is not working so how do i download fuzzy band and downgrade the baseband. please help.

Ricky Yu - February 18, 2010 at 11:23am

You cannot downgrade bootloader. Read http://blog.iphone-dev.org/

Bilal - June 14, 2009 at 2:57am

Dev Team is so silent i think they r not intresting to unlock bootloader 05.09 Dev team atlest reply onece.... Love you

Osayi - June 14, 2009 at 6:01pm

This is iClarified.com. Dev-Team is at blog.dev-team.org.

mubeen - June 10, 2009 at 12:52pm

i jus checkd mine bootloader its 6.02 :-( is there neway i cann downgrade it to 5.08

Osayi - June 14, 2009 at 6:07pm

No, not at the moment. You'll have to use a SIM adapter.

Bilal - June 14, 2009 at 6:18pm

iphone 3G v 2.2.1 Bootloader 05.09 Baseband 04.26 can i use sim adaptor?

Osayi - June 15, 2009 at 3:09am

@Bilal: Yes, you can.

mubeen - June 16, 2009 at 4:35pm

i ve tried the sim adaptor but looses its signal after every few hourss:@

Nicolas - March 22, 2010 at 10:48am

what is the best Sim Adaptor to use in this situation? 05.09 bootloader

aru tamhane - June 8, 2009 at 8:35pm

Thanks for the clarification. It was extremely helpful!

Viren - June 8, 2009 at 10:24am

Hey! guys!!! Am without cydia on the iphone!!! Pl. help!!! cheers,

Osayi - June 14, 2009 at 6:09pm

Jailbreak your phone: https://www.iclarified.com/entries/index.php?caid=2&scid=11&seid=2

Pedro - June 6, 2009 at 11:26am

Hi there. my Bootloader Version is 05.08 [G2M3S2] according to the Fuzzyband Downgrader but it says it's not supported because of my Baseband Version. Is there any solution ? Here's the info on the screen: BootLoader Version: 05.08 G2M3S2] Basebadn Version: ICE2-02.28.00 iPhone OS Version: 2.2.1 Thank you for your help.

Osayi - June 8, 2009 at 12:15pm

Everything seems to be in order. If your phone is jailbroken, download and Cydia.

pedro - June 9, 2009 at 5:21am

Hey there, my iphoned is jailbroken, I have Cydia that's how I used the Fuzzyband Downgrader. But it just says it's not possible. I guess it's the Baseband and not the BootLoader. Here is the info again: BootLoader Version: 05.08 G2M3S2] Baseband Version: ICE2-02.28.00 iPhone OS Version: 2.2.1 Thank you for your help.

Pedro - June 13, 2009 at 10:59am

Can anyone please help me ? it seems like eveything is correct with my iphone. I dont know why it doesnt works

Osayi - June 14, 2009 at 6:13pm

Unlock your iPhone: https://www.iclarified.com/2538/how-to-unlock-the-iphone-3g

batcho - May 28, 2010 at 1:29pm

i dont know what is wrong with my iphone i connot grt net work when the solution is going to be found

sam - November 10, 2010 at 2:02pm

how i can get bootloder 5.08 to unlock my i phone

Danny - June 4, 2009 at 7:33am

Come on Dev Team...got the new bootloader 5.9 :-(...please help ....

margarita - June 5, 2009 at 11:04am

me too!! can we downgrade the bootloader??? HELP!

Osayi - June 14, 2009 at 6:27pm

Use a SIM adapter. @Danny: Dev-Team is at blog.dev-team.org. @margarita: No you can't.

ifoneluv - March 5, 2010 at 8:50am

Osayi (2009-06-14 18:27:01) Use a SIM adapter. @Danny: Dev-Team is at blog.dev-team.org. @margarita: No you can't. WHAT'S THE SIM ADAPTER AND HOW TO GET IT DONE , PLZ HELP !!!

f*ckiphones! - May 20, 2010 at 7:49pm

dev team and geohot has been useless for months! don't expect anything from them.

Antonio Velazquez - June 2, 2009 at 10:04am

you really are sooooo good keep going in your good work, thank

serenity - May 31, 2009 at 8:36am

To iClarified Dv Help contact thanking you It is balance Garden but yet, it is not in the solution. I downloaded the BownBB, Fuzzyband file and RUNed pula Gramm. It is sorry but because the bootloader is 5.9 version, the SIM lock can not be canceled. Once again, we request in the help.

serenity - May 28, 2009 at 1:17pm

To you of the Dev team Thank you for the answer. In bootloader 5.9, will the change be impossible to 5.8? Let me know.

Osayi - May 28, 2009 at 4:04pm

It says clearly in the post that "If you have a bootloader version higher then 5.08 you will not be able to downgrade your baseband and a Not Supported message will be displayed." What do you think?

ricardo - May 27, 2009 at 9:48pm

SO I DID IT ON MY IPHONE AND IT WORKED I GOT MY IPHONE BACK FROM 2.30.03 TO 2.38.00 , BUT MY QUESTION IS WHEN THE NEW 3.0 FINAL RELEASE COMES OUT AND IF I UPGRADE WILL THIS UTILITY WORK AS WELL AS LONG AS I HAVE THE 5.8 BOOTLOADER? WELL AS LONG AS MY PHONE IS JAILBROKEN.

Osayi - May 28, 2009 at 10:14pm

No one can know this until after the official release of firmware 3.0.

john - May 31, 2009 at 12:40pm

Hey ricardo, just wanted to know when you upgraded your phone to baseband 2.30 did your wifi stop working or was it ok. because i when i upgraded my wifi stoped working so i wanted to know if yours start working again after you downgraded

serenity - May 26, 2009 at 1:37pm

Thank you for the help.! However, yet, the problem could not be solved. Again, we request your help. At present, it is " modem version 02.30.03 ", "OS 5G77". Tell the way of changing into modem version 02.28.0. It tried a down grade in the envoy modem version in the Fuzzyband software. However, because the bootloader version was to do 5.9 being, it isn't possible to do a change. Tell the way of changing a bootloader version into 5.8. Or, tell the way of modem version's being able to be changed in the other way. I request your help.

Zongo - May 26, 2009 at 5:36pm

Guys, let's face it: The "Dev Teams" of the world seem to be unable to hack anything above bootloader 5.8 or baseband 2.28. Congrats Apple. You won !

Osayi - May 28, 2009 at 10:11pm

Use a piggyback SIM.

ptheridophita - May 26, 2009 at 11:23am

Thanks guys, great job i manage to jail break my iphone 3g 2.2.1 but unfortunately my bootloader is 5.9. I am convince there will be a solution for this, please help. Thanks again.

Osayi - June 14, 2009 at 6:17pm

Hopefully. But for now, you'll have to use a SIM adapter.

h t - May 26, 2009 at 10:24am

what i dont understand is that if this app is available thru CYDIA then the iPhone 3g must already be jailbroken to download it. so why wud someone need to downgrade an already jailbroken phone. Does it make any sense?

Osayi - May 28, 2009 at 10:18pm

Fuzzyband downgrades firmware 2.2.1's baseband 2.30.03 to firmware 2.2's baseband 2.28.00 so it can be UNLOCKED by yellowsn0w. Make sense now?

Tony - June 8, 2009 at 7:05am

Hi I've tried to downgrade my phone with Fussyband it turns out I've got 5.9. My question is if I was to down grade the firmware to 2.2 would that give me a down graded baseband? Regards

jhon - May 26, 2009 at 12:02am

why i dwonload this fuzzyband? can tell me any one?

Osayi - May 28, 2009 at 10:56pm

If you have an iPhone 3G (firmware 2.2.1, baseband 2.30.03, bootloader 5.08) and it's locked, but you want it unlocked, you'll need to install Fuzzyband.

sadCody - May 25, 2009 at 3:57pm

The Majority got 5.09 bootloader, Where are Dev team? please find way around it!

titu - May 25, 2009 at 12:26am

Sir, we have os 2.2.1and 2.30 bootloder 05.09 please help all iphone user We wait 3month allready see your update 2.2.1&02.30and bootloder 05.09 we miss all and can't dial any where please help

Osayi - June 14, 2009 at 6:12pm

Use a SIM adapter.

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