Cydia Sources

How to Unlock iPhone Using Ultrasnow


Unlocking iPhone means you can use your iPhone with a different carrier. In the US, UK or Australia, unlocking is sometimes referred to as contract-free or SIM-Free phone. The easiest way to unlock an iPhone is to go through your carrier. Once your carrier unlocked your iPhone, you can back up and restore your iPhone to unlock it immediately. Often, you can only request an unlock from your carrier when your are not tied up to any contract. In other words, you have to meet the requirements to unlock your iPhone. This usually doesn’t happen to people who have just bought an iPhone through a carrier network with monthly installment or people who don’t pay the full price for their iPhone. There are, however, a few third party methods to unlock an iPhone.

Software to Unlock iPhone

In the market today, there are 6 free software to unlock an iPhone and they are:

  1. Ultrasnow Unlock from Cydia
  2. Gevey Sim Unlock – Work for iPhone 4 and iPhone 4S.
  3. iPhone Unlock using SAM Ticket
  4. The iPhone IMEI number – Work for all iPhone models include the latest iPhone 6.
  5. R Sim Interposer – A good option for iPhone 4S, iPhone 5, iPhone 5S and iPhone 5C.

The best way to unlock an iPhone is with Ultrasnow Unlock software from Cydia. Unfortunately, Ultrasnow (Ultrasn0w) works only on iPhone 3G, iPhone 3GS and iPhone 4. It doesn’t work on the latest iPhone 6 Plus, iPhone 6, iPhone 5, iPhone 5S or iPhone 5C. At most times, websites that offer you a service to unlock your iPhone are usually scam.

How to Unlock iPhone with Ultrasnow from Cydia

Ultrasnow is a freeware. The main feature is not just to unlock iPhone but also to make an iOS 5 and iOS 6 device run better. Follow the guide below and you can unlock iPhone using Ultrasnow.

Step 1: As Ultrasnow works only on jailbreak device, it is a must to jailbreak your iPhone and then download Cydia on it. You can use the best jailbreak tools in the market such as Redsnow, Absinthe, PwnageTool, Greenpois0n or Snowbreeze. See also: how to download Cydia on iPhone 4.

Step 2: Put in your new sim card to your iPhone and launch Cydia.

Step 3: Go to Manage -> Sources -> Edit -> Add. Read How to add a Cydia repo for detail guide with images.

Step 4: Add Ultrasnow repo ( or to Enter Cydia/APT URL text box and tap on Add. It reads as Ultrasn0w and not Ultrasnow. Make sure you type it correctly.

Ultrasnow Cydia

Step 5: Go to Ultrasn0w repo and you should be able to see Ultrasn0w 1.2.8. Tap on the Install button to install it right away. Your iPhone will be unlocked within a few seconds depending on your connectivity.


Bingo! That’s how to unlock iPhone using Ultrasnow and Cydia. If you have upgraded your iPhone 4 to iOS 6, you will need to use Ultrasnow Fixer to unlock it. Ultrasn0w Fixer can be downloaded from iParelhos repo for free. The latest version is Ultrasn0w Fixer 6.1.

Have you unlocked your iPhone successfully with the guide above? We would love to hear it! Alternatively, you can check out what are the good Cydia sources for iPhone 4.