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Download Ultrasn0w 1.2.1 (DEB File) to Unlock iPhone 4/3GS on iOS 4.3.1 Offline

By Depresi Art 7 comments
iPhone Dev-Team has finally released Ultrasn0w 1.2.1 which can unlock iPhone 4 and iPhone 3GS on iOS 4.3.1 running old basebands. If for some reason you do not have an active WiFi connection, you can always unlock your iPhone offline by installing Ultrasn0w 1.2.1 DEB file. This is a simple two-step process which you can accomplish either by SSH'ing (Win | Mac) into your iPhone or by using iPhone Explorer (Without SSH).

Steps to Install Ultrasn0w 1.2.1 on Your iPhone 4/3GS Offline:

NOTE: If you have already installed Ultrasn0w 1.2 on your iPhone, first uninstall it by navigating to Cydia->Manage->Packages->Ultrasn0w->Modify and select Remove option.

Step 1: Download Ultrasn0w 1.2.1 DEB file
Download Ultrasn0w 1.2.1 DEB file from Ultrasn0w.com [Direct Link]
Download Ultrasn0w 1.2.1 DEB file from RapidShare
Download Ultrasn0w 1.2.1 DEB file from MegaUpload
Download Ultrasn0w 1.2.1 DEB file from Deposit Files
Download Ultrasn0w 1.2.1 DEB file from Hotfile
Download Ultrasn0w 1.2.1 DEB file from zSHARE
Step 2: Connect your iPhone to your PC or Mac and launch iPhone Explorer. Place the Ultrasn0w DEB file in AutoInstall directory by navigating to the following location:
Location: /var/root/Media/Cydia/AutoInstall
Reboot your iPhone normally using SLIDE TO POWER OFF swipe. If you are a T-Mobile USA user, DO NOT forget to disable 3G mode in Settings->General->Network before rebooting your iPhone. After the reboot, you'll find your iPhone fully unlocked on iOS 4.3.1 with all signal-bars issue fixed.

7 comments for "Download Ultrasn0w 1.2.1 (DEB File) to Unlock iPhone 4/3GS on iOS 4.3.1 Offline"

  1. UnknownApril 14, 2013 at 7:15 PM

    Is it possible for someone to send me a side profile of the screw marked 'screw 2' in the first picture? I had lost this one and ordered a replacement set of screws from eBay but none of them seem to fit and there is no hole to screw it in as the bit it touches is a copper circle. It would be greatly appreciated if someone could do this for me. Thanks.
    Iphone Repairs Melbourne

    ReplyDelete
  2. rosaaJuly 8, 2013 at 12:01 AM

    Innovative Ray Solar Charger Juices Up Your iPod, iPhone or Other Gadget Using Sun Power

    Read more: Innovative Ray Solar Charger Juices Up Your iPod, iPhone or Other Gadget Using Sun Power | In habitat - Sustainable Design Innovation, Eco Architecture, Green Building

    ReplyDelete
  3. UnknownOctober 19, 2014 at 8:08 PM

    useful information.i read a lot of interesting stuff in this article thanks for posting.

    ReplyDelete
  4. evie pooleOctober 19, 2014 at 8:29 PM

    useful information.thanks for posting bu the actual unlock works by a daemon patching the baseband's RAM on-the-fly, overriding the carrier lock code.
    iPhone Repair Manchester

    ReplyDelete
  5. UnknownDecember 22, 2014 at 2:35 AM

    Hello your blog is sharing great information.I read your blog. Thanks for share this blog, Pure repair Providing best Ipod reparatie groningen
     in Nederland.

    ReplyDelete
  6. Paul BrightonJanuary 22, 2015 at 9:54 PM

    Thanks for this wonderful post and hoping to post more of this.

    ReplyDelete
  7. UnknownFebruary 10, 2015 at 1:35 AM

    With all said and done, cell phone repair can be done. If you are looking to repair phones chances are that if you search the net for replacement parts might be easier and it might also save you some money. Most mobile companies only cover software in the one year of warranty and not lcd coverage so having the repairs completed by the manufacturer might be expensive. Searching the net for replacement parts might be better, and we are the only company in Canada with complete set of services.

    ReplyDelete