A few months ago I posted about a tool we developed, called Fuzzyband, to downgrade the baseband on the 3G iPhone to make it unlockable again. We’ve recently pushed out an update to that tool, though the feature set has changed a bit due to developments by the Dev-Team.
Features:
Upgrades / Downgrades baseband to 4.26.08 for unlocking with the ultrasn0w tool released by the iPhone Dev-Team.
UPGRADING:
Upgrading is for users that wish to remain on 2.2.1 but also unlock. Upgrading will put the 4.26.08 baseband from 3.0 on the modem so that ultrasn0w may be installed from Cydia.
DOWNGRADING:
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.
Any questions or comments can be directed to w1kedZ: fuzzyband@peacefulinsanity.com or in the comments below.
where can i download fuzzyband?
Hi..
WIll there be a version to downgrade for those who accidentally upgrade the firmware to 3.1 in iPhone 3G.
whemn does one come out for 3.1 ????????
deeznuts1969@gmail.com
Hi people…
I have the bootloader 05.09!!! ;(
do u think that will be a version of Fuzzyband for this Bootloader?
Thanks in advance and Keep on fighting!!!
Hi,
Does any one answers our question or Just for time pass this blog is open?
“hunek” is asking from where to download? So just answer the question or remove this blog from this site.
@iPone3G: Ok seriously? The title of the post is “… Available in Cydia”. That is where hunek can download it from. Also Hunek’s question was in august, the post is 3 months old now. If hunek (or you) don’t understand how to download things from cydia, you need to search our blog for one of the many cydia tutorials, google is also a good reference. If you yourself don’t have anything constructive to add to the post, then don’t waste everyone’s time by commenting.
At the risk of getting slapped down, I have to say I have been on cydia and first off it’s confusing for the noob’s like me, and second I can not find fuzzyband to download anywhere on the internet or on cydia’s website. Sadly I am not a computer genius, I’m just a grandmother who wants to give her iphone to her grandson but can’t get his prepaid card to work in it.
@Petra: as my previous comment reflected, this app is likely not for you then. Cydia is not a website, it is an app that appears on the phone after performing the jailbreak process, and had you actually been in cydia in the bottom tab bar there is a search button and typing fuzzy would have returned Fuzzyband.
The process of jailbreaking and downgrading is definitely not reserved for computer genius’s but does require a decent amount of computer knowledge and understanding. It’s not intended to be done by your average iPhone buyer.
That being said, there are many tutorials online on jailbreaking, as well as using Cydia. We have quite a few on our site. But as stated in the post, unless the iphone in question is a 3G iphone purchased in the first week (maybe second) that the 3G came out then it is most likely not downgradeable, and if it has already been upgraded to 3.1 or 3.1.2 is possibly forever locked to the carrier.
FUCKKKK
I Have a Iphone 3G with original version of 3.1.2 and was working fine till the last update from apple store unfortunately without knowing the consequences I upgraded the Iphone through iTunes to 3.1.3. now my iphone is unlocked (jail-broken) but with the upgrading of firmware to 3.1.3 the modem is also upgraded to ICE2-05.12.01 and the baseband is locked is there anyone who can help me
Like many out there, I made the error of upgrading my iPhone firmware from 3.1.2 to 3.1.3 and instantly had trouble doing anything useful with it afterward. But I did manage to unlock my phone and I learned to do this within a few hours of online research. First things first, if your phone is locked please beware that a lot of scam sites claim to have an unlock method for a fee, but this is just a ploy to get your money and capitalize on your upgrade mistake. Don’t pay a cent.
Your best bet is to downgrade your firmware by downloading the appropriate firmware from http://www.felixbruns.de/iPod/firmware/, which we will use in a later step. Download the firmware and then download Cydia application from http://www.pure-mac.com/iphone/installers.html#cydia
Then, you’ll have to downgrade your version of iTunes to 8.2.1 (not quite sure why this works but version 9 will make things much harder) and you can find older versions of iTunes for windows on oldapps.com or google search itunes 8.2.1 for mac users. I got mines from this site: http://www.blogsdna.com/3497/download-itunes-82-quicktime-762-for-windows-mac.htm
If you have the NON-MC model iPhone, you also most likely have a baseband that is below 5.12.01 unlike the 3GS iPhone. If you do happen to have a 3GS phone that was upgraded to 3.1.3 firmware, you’ll just have to sit this one out until a new jailbreak becomes available because the baseband is locked and cannot be downgraded by Fuzzyband as of yet.
If you do have an older baseband (from the factory) for your i Phone, which you can tell if the last 4 or 5 digits of the Serial Number are below 40, there’s hope for you yet.
To unlock my phone I used Pwnage Tool for MAC OSX, quick pwn is the windows version of this unlock tool. You’ll want to make a desktop folder and name it ‘Pwnage’ where you will save your custom .ipsw as well as the other applications necessary for the unlock.
Using either pwnage tool or quick pwn, what you’re going to be doing is building a custom .ipsw which will include Cydia which also contains both Fuzzyband and yellowsn0w JBYou’ll need to downgrade your baseband using Fuzzyband, both Cydia applications. Please note, you can only use ultrasn0w or yellowsn0w with a baseband of 04.26.08 or below. If you have the baseband of 5.12.2 you WILL not be able to use the unlock for your phone with an non-authorized carrier such as T-Mobile without using Fuzzyband to downgrade to 04.26.08 first so please be warned.
The key to jail breaking once the phone is unlocked (I used yellowsn0w) is in downgrading your BB with Fuzzyband in Cydia otherwise there is no way to bypass the baseband it and you will have an unrecognized SIM card that does not work. Once you’ve built your custom .ipsw, put your phone into DFU mode (by holding the power and home buttons for 10 seconds) or by using Pwnage or Quick Pwn, and then i-Tunes will prompt you to restore.
Proceed to restore your device using i-Tunes by pressing option- restore for mac users or shift-key then restore for windows choose the custom .ipsw from the folder you’ve made. The i-Pod will then begin the restore process which can take up to 10 minutes.
If you have a 3GS with new botroom or MC model phone on 3.1.3, I repeat, this will probably not work for you because there is no current unlock that is compatible with this firmware and baseband.
i have 05.09 bootloader , i want to change to unlock my iphone any help ? please