Ultrasn0w 1.2.1 To Unlock For iPhone 4, iPhone 3GS On iOS 4.3.1 Released; Also Fixes Signal Bar Issue

News | Tuesday April 5 2011 6:10 AM | Comments (0) Tags: , , , , , , ,

for iOS 4.3.1.
Ultrasn0w 1.2.1 for
baseband 01.59.00 and
basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04 and 06.15.00.
We’ve pushed out the 4.3.1 compatibility fix for ultrasn0w in Cydia — it’s now at version 1.2.1.  If you’re not already at 4.3.1 and you need the unlock,
please be sure you understand how to get to 4.3.1 using a custom IPSW that doesn’t update your baseband.
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.
using the normal “slide to power off” swipe.  T-Mobile users in the USA also should disable 3G mode in Settings->General->Network.
A big thanks to @sbingner and @ronaldsb for helping with the testing of this update!
Ultrasn0w 1.2.1 can be installed on a jailbroken iPhone 4 (baseband 01.59.00) or iPhone 3GS (baseband 04.26.08, 05.11.07, 05.12.01, 05.13.04 and 06.15.00) on iOS 4.3.1.
Ultrasn0w 1.2.1 can’t unlock iPhone 4 basebands – 02.10.04 (bundled with iOS 4.1), 03.10.01 (bundled with iOS 4.2.1), 04.10.01 (bundled with iOS 4.3) or iPhone 3GS basebands – 05.14.02 (bundled with iOS 4.1), baseband 05.15.04 (bundled with iOS 4.2.1), baseband 05.16.01 (bundled with iOS 4.3) and baseband 05.16.02 (bundled with iOS 4.3.1).
iPhone users who don’t care about unlocking but want to fix the signal bar issue also need to install Ultrasn0w 1.2.1.
Launch Cydia from the homescreen.
tab and search for ‘ultrasn0w’. That last “o” is actually the number zero “0”. If you use the letter “o” you’ll get an error.
Select ultrasn0w from the search results.
, tap on it.
Reboot your iPhone , your iPhone should now be successfully unlocked or the signal bar issue should be fixed.
As always, let us know how it goes.

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