First things first: unlocking your iPhone is illegal according to new DMCA rules. However, the rule applies only to those units bought and activated on or after 26th Jan 2013. Which means a large part of the iPhone users can legally and safely unlock their iPhones (provided you’ve bought it before 26th January).

We’ve not much heard about iPhone unlocks in recent times (other than a couple of times when an iTunes restore unlocked AT&T iPhones and Verizon admitted that all their iPhones came unlocked). This is because there hasn’t been a proper untethered jailbreak till Evasi0n came up a few days back. And without a jailbreak, you really don’t think much about unlocks.

The U.S. Federal courts ruled that unlocking the iPhones out of the carrier contracts is illegal with monstrous penalties.ultrasnow unlock

While the usual stuff (petitions, signing, outcry, freedom etc.) goes on, ultrasn0w got updated silently without much ado. iPhone 4 and 3GS users who run iOS 6.1 with the basebands mentioned below can now unlock their iPhones using Ultrasn0w.

Update: Ultrasn0w 1.2.8 appears to be problematic for iPhone 4 users running iOS 6.1 on baseband 1.59.00. If you are on it, don’t – repeat, DON’T – install it. – thanks to our reader Deepesh for the comment.

Ultrasn0w 1.2.8 can be found in Cydia. As always, make sure you’ve got a compatible baseband and iPhone – otherwise, it just won’t work.

To check your baseband, go to:

Settings -> General -> About -> Modem Firmware.

The Modem Firmware number is your baseband.

Ultrasn0w 1.2.8 is compatible with: iPhone 4 and 3GS/3G

These are the basebands:

iPhone 4: 01.59.00

iPhone 3GS/3G: 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00

Incidentally, if you are on these basebands but not on iOS 6.1, you might want to try ultrasn0w. Then, if it fails (which it most certainly would), upgrade to iOS 6.1 but via Redsn0w. But when you upgrade, make sure to preserve BB: open Redsn0w → Extras → Even More → Restore and select Preserve baseband.

DMCA Rules 2012 by

  • Frederick Aujero

    a fix for iphone 4 6.1.2 1.59 ultrasnow 1.2.8. (it worked for me and others who tried it in the links below)

    thermzmaster found a way to stop the cycling. everything works except push, imessag facetime and still with one signal bar.

    here is his guide:

    after that GJCD stated that to fix push notifications you go to

    after installing SAM, your phone will respring but with ACTIVATION REQUIRED. dont panic, a guide by Mohcine Ariani at will show you how to bypass the activation and the step by step in configuring SAM.

    credit goes to the ones mentioned! i got my iphone 4 6.1.2 baseband 1.59.00 working(even push!) except for the one signal bar.

  • Arun kumar

    i have updated my iPhone 3gs with 6.1 and Baseband 06.15.00 and Jailbreak using Redsn0w and untethered using Evasi0n. However my iPhone 3gs still shows “NO SERVICE” . How can i fix this?

  • FJK

    i have iphone 3gs with ios 5.1.1 & Baseband 05:13:04… can i just download ios 6.1, Run Redsn0w, open → Extras → Even More → Restore and select Preserve baseband. after this will i have to press jailbreak an install Cydia an also select hacktivate. so i dont have problem with activation ?

  • First off, make sure you’re on a supported Baseband. Secondly, you can try restoring to iOS 6.1 while preserving the baseband (use Redsn0w) and then try again. And are you sure the signal issues are ONLY due to Ultrasn0w?

  • Frederick Aujero

    Ultrasn0w 1.2.8 isnt compatible with: iPhone 4 on ios 6.1. No signal/ one bar signal issues so far.