Any discussion on piracy are not allowed and will not be tolerated - http://forum.lowyat.net/topic/1654779

    Uninstall UltraSn0w if you already have it installed
    Add this source to Cydia: http://djayb6.com
    Install UltraSn0w Fixer for 4.3.2

    This isn’t a new unlock!  It’s to allow those who are already using ultrasn0w to use FW 4.3.1. It also fixes the signal bar issue for those who aren’t using the unlock but retain an older baseband intentionally.

    AFTER INSTALLING ULTRASN0W 1.2.1, PLEASE REBOOT YOUR iPHONE using the normal “slide to power off” swipe.  T-Mobile users in the USA also should disable 3G mode in Settings->General->Network.

The Dev Team just released their unlock for iPhone 4.3.1. This updated version of ultrasn0w brings support for the iPhone 3Gs and the iPhone 4 that are exclusively using these basebands: 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04, and 06.15.00.

In this post, we’ll guide you into unlocking your iPhone 3GS or iPhone 4 on any of the above basebands, and running the latest iOS 4.3.1…

First, you have to make sure your iPhone comes with any of the baseband versions listed above. If it doesn’t there isn’t much solution for you at this time.

If your iPhone is however running any of those versions, you can easily update to iOS 4.3.1 while preserving your baseband, which will allow you to unlock using ultrasn0w 1.2.1.

Step 1: You will first have to jailbreak and update your iPhone using one of these methods:

    update to iOS 4.3.1 with PwnageTool [Tutorial available below], or
    update to 4.3.1 while preserving 01.59.00 baseband using TinyUmbrella [Tutorial available below]

Step 2: Once you are updated to iOS 4.3.1, launch Cydia, go to Manage > Sources > Edit > Add,  and type in the following repo: http://repo666.ultrasn0w.com. This will install the ultrasn0w unlock on your phone.

Step 3: After installing UltraSn0w, make sure to reboot your iPhone.

At this point, you can insert a different SIM card. If you install T-Mobile, make sure to disable 3G in Settings > General > Network.

Thats all there is to it. The whole jailbreak+unlock process is fairly easy and shouldn’t take more than a few minutes.

Guys wait... I read it on Engadget that the Ultrasn0w does support the original iPhone 2G. Only 3G[S] is not supported at the moment but another release is set this coming Friday.

Engadget

@MuscleNerd I'm using the old iPhone 2G. Is it necessary for me to apply UltraSn0w after jailbreaking with RedSn0w? Thanks a lot!
about 4 hours ago from web in reply to MuscleNerd

@net_one nope don't bother install ultrasn0w if you're on 2G. It won't kill your 2G but it just doesn't help it. BootNeuter.app unlocks 2g.
about 4 hours ago from web in reply to net_one

anyone else successfully unlocked their 3G~?
So far, only 1 successful post

Help.. any shop doing this? i dont have my AT&T sim with me so i cant just update with itunes.. my fon is locked but im just using gevey.. lol help?

hey..i already ultrasnow and installed icy + cydia....how to remove the Icy? need to restore back ?

guyz, i used the restore file from a CD Maxis gave me, just now it works just fine, jailbreak / unlock n everything, but then when i tried to restore my contacts / sms / notes / calendar.. my phone became unstable, it keeps on switching on n off on the Slide To Unlock screen. so, again..i restored n jailbreak..its fine, but now i cant get maxis signal, again. reinstalled ultrasn0w couple of times, restarted couple of times.. still..nothing..

For those who have uploaded your backup data files to the folders below and encounter errors:
Please set all files permission to 777 or 755.

a) Contacts- var/mobile/Library/AddressBook/AddressBook.sqlitedb (contain the numbers) and AddressBookImages.sqlitedb (contain the contact pics)
b) SMS - var/Mobile/Library/SMS/SMS.db
c) Calender - var/mobile/Library/Calendar/Calendar.sqlitedb
d) Notes - var/mobile/Library/Notes/Notes.db
e) Maps - var/mobile/Library/Maps (Bookmarks.plist, History.plist and Route.plist)

using itunes 8.2 bro. still no luck for me after last nite. is it possible dat my iphone is faulty ?

ok guys, i've read everything all over again n it seems i missed this one step, but im not sure if it will solve d prob im having, so just to make it clear..
-do i need to take out my simcard during restore ? (coz i did restore my phone b4 this with sim card in my iphone n it works great)
-do i have to insert my simcard during jailbreak / redsn0w ?

plz guys, maybe if u can clear things up for me, it will be a great help. thx.

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Added on June 25, 2009, 8:06 amomg...this is very frustrating...when im done with the restore without simcard, jailbreak, unlock, Searching...No Service, after awhile, No SIM ! i give up..
anyone can help me out by providing unlocking service ? i dont wanna send to shops as i am not confident with them, not on their skills but rather not sure if they r trustworthy..

Forgive my n00bness, does this mean if i have a 02.30.03 BB i wont be able to ultrasn0w it?
No any other ways?

just had my gf's iphone 3g to this new firmware...somehow quite noticable battery usage is faster than normal?? maybe its really meant for the new iphone 3gs which they might supply bigger battery capacity??

guys, it seems dat i got my i3g to work with ultrasn0w after restoring / jailbreaking / unlocking via my fren's MAC ! i dont know why but when i upgraded my dad's / frens i3g via WINDOWS it works wonderfully, but "No Signal" issue with mine everytime i do so.. still, after unlocking it via MAC, i need to switch on n off the airplane mode to get the signal. everytime i restarted the phone i need to do so.. its not a big problem, s long s it will work i wouldnt mind d small effort.. but i need one more help guys, what is the settings for MMS, i've waited for few days d, but i didnt received d MMS i sent from my other phone.

APN :
Username :
Password :
MMSC :
MMS Proxy :
MMS Max Messages Size :
MMS UA Prof URL :

Thx !

bro, what does it mean by

1. Maxis
set by Carrier Settings

? do i need to call maxis for my settings ?

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Added on July 1, 2009, 7:46 pmn owh..my carrier is 4.0

i have an iphone from switzerland. and its locked. can i jailbreak and straight using ultrasnow because i aware later i need to download sumthing from the http. how it can be download if i cant use my maxis yet? thanks

Question~ can i use ultrasnow to unlock 3GS NOW??

Is there any know issue, for jailbreaking the 3GS? Because I'm about to jailbreaking it now, all the tools in front of my face, just scared later some shit happens and it spoiled my 3GS.

here's my screenshot on my Messaging Column. n notice there i already installed the ippc / maxis logo.

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Added on July 16, 2009, 11:16 am

so, u suggest i try the tethering guide ?

*note : i found another phone dat have same problem as mine. iphone 3g 16gb, no MMS option in the Messaging Options. i didnt jb it, sum1else did. everything else is a success..just no MMS Option. n he's using Celcom.

i've successfully unlock digi and celcom but not maxis and u-mobile..
tried removed and reinstall ultrasnow.. any tips?

yeah i understand tat, it is just tat i haven even install redsnow and it can already support digi and celcom sim
any tips what shall i do now?
its from ebay US. bought it in US.

btw, i tried to delete every content and restore the iphone to the factory setting (man it took 3 hr and the apple logo is still there...) is there anything i can do?