Apple Released iOS 6.1.1 for iPhone 4S with Baseband Updated to 3.4.02 (Jailbreak Safe)

Two weeks after the release of iOS 6.1, Apple rolled out another update specifically for the iPhone 4S.

This update is really critical because according to Apple, it is supposed to address an “issue that could impact cellular performance and reliability”.

The “performance and reliability issues” are related to sending text messages, connecting to your cellular network, and also something related to Microsoft Exchange.

European carriers in particular Vodafone UK sent out warning to its customers not to update their iPhone 4S without waiting for this patch. Hopefully, this patch will help sort out affected customers.

Due to the critical nature of this 23MB update, Apple probably didn’t spend any time patching the untethered jailbreak exploits found in iOS 6.x, which means it’s safe for iPhone 4S users to continue updating to iOS 6.1.1 and jailbreak it with evasi0n 1.3.

Meanwhile, the baseband is now updated to 3.4.02 and as usual, there’s won’t be any ultrasn0w or any “free” unlock available for this baseband. An official unlock is by far the best solution for now.

Here’s a direct download iOS 6.1.1 10B145 for iPhone 4S hosted on Apple’s server.


Fix for iPhone 4 Baseband 1.59.00 No Service Issue with Ultrasn0w 1.2.8 on iOS 6.1

If you have an iPhone 4 with baseband 1.59.00, you will encounter a major compatibility issue with ultrasn0w 1.2.8 and iOS 6.1.

You will notice the following symptoms:

  • It cycles between “no service” and one bar signal with 3G.
  • Every 20 seconds it pops up one bar for your network and then returns No service.

Unfortunately, there’s no fix for now. Even the ultrasn0w fixer won’t do your iPhone 4 any good.


See the comments section below for possible fix.

Your best option for now is to downgrade your iPhone 4 back to iOS 5.1.1, assuming that you have the SHSH for it, but most of you should have it saved on Cydia/Saurik’s server already.

Of course, the best solution is to get your iPhone officially unlocked so you won’t need to deal with this type of problem in the future.

Meanwhile, let’s wait for a a fix from the Dev Team.


How to Install Ultrasn0w 1.2.8 iPhone Unlock without WiFi or via Cydia (using DEB files)

Broken WiFi on your iPhone and not able to install ultrasn0w 1.2.8 to unlock your iPhone? Try this fix.

Important Notes:

1. Your iPhone 4 or iPhone 3GS running on iOS 6.1 must already be jailbroken with its baseband preserved. You can jailbreak it using evasi0n or build a custom iOS 6.1 firmware to preserve your baseband.

2. Supported basebands are listed below. Everything else is NOT supported.

How to Install Ultrasn0w 1.2.8 iPhone Unlock without WiFi or via Cydia using DEB Files

1. Download i-FunBox for Windows or DiskAid for Mac.

2. Launch i-FunBox or DiskAid and go to /private/var/root/Media.

3. Inside Media folder create a folder called Cydia.

4. Now inside Cydia folder create an AutoInstall folder. Note: The folder name is case-sensitive so be sure to name it accurately. It should look something like this:


5. Download the file below (121kb), extract into the folder above.

Free download link is available below:

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6. Reboot iPhone.
That’s it! You should get your network signal by now.

Safely Update iPhone 4 or 3GS to iOS 6.1 (Preserve Baseband) with Sn0wbreeze 2.9.8 Custom Firmware

If you use ultrasn0w or Gevey SIM to unlock your iPhone, here’s the ultimate guide to safely update to iOS 6.1 while preserving your baseband.

UPDATE: Click here for iOS 6.1.3 tutorial.

UPDATE: If you own an AT&T iPhone, unlock it permanently using this.

You probably have read the following countless times, but if you’re new to using locked iPhone, it may be worthwhile to read and understand the points below:

  • Custom firmware allows you to restore your iPhone without updating the baseband.
  • By preserving the baseband, you can continue unlocking your iPhone; either with ultrasn0w or Gevey SIM depending on your iPhone model or baseband version.
  • There’s no known software method to downgrade your iPhone 4 baseband, once it’s updated, there’s no turning back.
  • With sn0wbreeze 2.9.8 (Windows only), it can untethered jailbreak iOS 6.1 and below.
  • If you’ve downgraded your baseband chip with us before, this guide will be useful for you. Under no circumstances you should restore using stock firmware.

What you need:

  • iPhone 4 with baseband 01.59.00 (unlock with ultrasn0w) or 02.10.4, 03.10.01 and 04.10.01 (unlock with Gevey SIM). Baseband 04.11.08 or 04.12.01 cannot be unlocked or downgraded.
  • iPhone 3GS with baseband 05.11.07, 05.12.01, 05.13.04 or iPad baseband 06.15.00
  • Sn0wbreeze 2.9.8
  • Ultrasn0w Fixer for iOS 6.1
  • Ultrasn0w 1.2.8

Note: Currently, there’s still no way to preserve iPhone 4S or iPhone 5 baseband.

Before you begin, always remember to backup your iPhone.

Part One: Building and Installing Custom iOS 6.1 Firmware (Baseband Preserved)

The first part involves the building and installing custom iOS 6.1 firmware. ‘Hacktivation’ is needed if you don’t have the official SIM card. The second part of this tutorial explains the steps to unlock your iPhone: Part 2(a) is using ultrasn0w for supported baseband only  or Part 2(b) is for Gevey SIM for iPhone 4.

1. Download original iOS 6.1 firmware (IPSW) from here. They are all hosted on Apple’s servers. It’s highly recommended that you save it on your hard drive for future use.

2. Download Sn0wbreeze 2.9.8 from

3. Start sn0wbreeze.

4. Click browse and locate the original iOS 6.1 that you just downloaded.

5. Sn0wbreeze will identify the IPSW file. Click Next.

6. Choose one of the modes below:

  • iFaith Mode: Builds custom iOS and stitches it with your saved SHSH.
  • Expert Mode: Preserves your baseband, will jailbreak and hacktivate (activate).
  • Simple Mode (recommended): Preserves your baseband, will jailbreak and hacktivate.
  • Baseband Preservation Mode: Preserves your baseband, but will not hacktivate or jailbreak. You will need your official SIM card to activate it after restore.

7. Now it will ask you whether you want to hacktivate or not. Select “Yes”. Now wait until sn0wbreeze completes building the custom iOS 6.1 for you.

Once the custom iOS 6.1 is ready you will find it on your desktop. Before restoring your iPhone, you MUST put your iPhone into pwned DFU mode. This allows it to accept custom firmware. Otherwise, you’ll get an error message during restore. iREB will appear as soon as custom firmware is built. You can also access it on the menu bar of sn0wbreeze.

To begin restoring, be sure your iPhone is already in pwned DFU mode (black screen) then launch iTunes, press shift on your keyboard and click restore. Select the custom firmware that was just created. To be sure, the file name always begin with sn0wbreeze_iPhone_xxxxxxx.

If you get error 3194, use this guide to fix it. For other iTunes errors, refer to this.

Part Two (a): Unlock with ultrasn0w fixer from Cydia [for supported baseband only]

Ultrasn0w 1.2.8 is now available.

1. Launch Cydia and add the following repo by going to Manage > Sources > Edit > Add:

2. Search for ultrasn0w fixer for iOS 5.1.1 and install it.

3. Finally, search for ultrasn0w (1.2.7) 1.2.8 and install that.

4. Reboot your device.


Note: Some reported that the ultrasn0w repo is down, see below on how to install ultrasn0w manually (not tested):

a. Download i-FunBox for Windows or DiskAid for Mac.

b. Launch i-FunBox or DiskAid and go to /private/var/root/Media.

c. Inside Media folder create a folder called Cydia.

d. Now inside Cydia folder create an AutoInstall folder. Note: The folder name is case-sensitive so be sure to name it accurately. It should look something like this:


e. Extract the zip file below into the folder above. Reboot iPhone.

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Part Two (b): Unlock with Gevey SIM [for iPhone 4 baseband 02.10.01, 03.10.01 or 04.10.01 only]

1. Eject your SIM tray and reboot your iPhone.

2. Once restarted, unlock your screen. Turn off 3G and cell data (you can turn these on later). Insert your SIM tray along with your SIM card and Gevey SIM.

3. Wait for Accept Screen. Tap Accept.

4. You will see No Service (in iOS 4.x, you will see one signal bar). Wait for 15-20 seconds and dial 112. Hang up after 1-2 seconds.

5. Turn on Airplane Mode and wait for ‘NO SIM CARD INSTALLED’ message. Turn off Airplane Mode and you will see ‘SIM FAILURE’ and tap OK. Your iPhone will connect to your network now.

Finally, if you’re having issues with your device not showing up in iTunes after running sn0wbreeze, install the evasi0n untether from Cydia.

That’s it! Your iPhone is now unlocked on iOS 6.1 along with untethered jailbreak. Everyone’s a happy camper!

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Unlock, Untethered Jailbreak & Preserve iPhone 3GS Baseband with iOS 6.1 Custom Firmware

If you don’t work on fixing iPhones daily, you tend to forget some of the jailbreaking/unlocking steps which you have done on your iPhone 3GS. Here’s your super-guide.

I’m sure you’re already aware that the untethered jailbreak for iOS 6.1 is already out – which is great. However, we are now waiting for Dev Team and ih8snow to release their latest tools ih8sn0w has just released sn0wbreeze 2.9.8 to allow you to build custom firmware for iOS 6.1. While we’re waiting for them to work on their magic, save this page because I’ll update this as soon as the tools are available.

We still receive quite a number of broken 3GS so we will continue to support this old device for as long as Apple still provide updates for it. It’s old but not forgotten.

A few important things to note:

  • If you’re new to iPhone jailbreaking and unlocking, the reason why you need to preserve your baseband is to allow it to be unlocked with ultrasn0w. This will sound very confusing at first, so follow each step carefully.
  • Before you begin, please be sure that you have downgraded your baseband to 5.13.04 if you still have the dreaded iPad baseband 6.15.00
  • If you have an AT&T iPhone, unlock it permanently using this.
  • If you updated to iOS 6.1 which changed your baseband to 5.16.08, unfortunately you need to install the iPad baseband 6.15.00 first in order to downgrade it to 5.13.04.
  • Already running on iOS 6.0.1 or 6.0? Go to Cydia and install evasi0n 6.x Untether.

WARNING: Proceed at your own risks. If unsure, feel free to ask or leave your comments below. Not all iPhone 3GS can be unlocked using ultrasn0w, I won’t go through the details here so learn why here.

How to Unlock and Jailbreak Untethered iPhone 3GS iOS 6.1 using Custom Firmware

1. Build custom iOS 6.1 using sn0wbreeze 2.9.8 by following the instructions here.

2. Use iREB or redsn0w to pawn DFU your iPhone 3GS. If you don’t do this, your iPhone 3GS won’t be able to take custom iOS and iTunes will give you an error message.

3. Restore to custom iOS 6.1 you just built in using iTunes by pressing shift+restore on Windows or option+restore on Mac. Point it to the custom firmware you just built.

4. Wait for the restore to complete. Once the restore is done, your iPhone will boot up normally. Go through the activation steps (if needed). The jailbreak should have ‘hacktivated’ your iPhone 3GS.

5. Now you’ll need to unlock it with ultrasn0w fixer for iOS 6.1, since the official ultrasn0w is currently not available. Ultrasn0w Fixer for iOS 6.1 supports older basebands only (sigh):

iPhone 4

  • 01.59.00

iPhone 3GS

  • 04.26.08
  • 05.11.07
  • 05.12.01
  • 05.13.04
  • 06.15.00

Everything else is not supported.

How to Install Ultrasn0w 1.2.8 Fixer to Unlock iOS 6.1 with Preserved Baseband

1. Install Ultrasn0w Fixer for 6.1 package by launcing Cydia, tap on Manage > Source > Edit > and Add the following source:

2. Tap on Search and look for Ultrasn0w Fixer 6.1. Tap and install it.

3. Tap on Search again and install official Ultrasn0w 1.2.7 1.2.8. If you can’t find it, add this source:

4. Reboot your iPhone once the installation is complete. If all goes well you should get your carrier signal by now.

If there’s anything unclear, leave your comments below.

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