UPDATE #1: UltraSn0w 1.2.4 is now available on Cydia! Click here for more information.

According to a tweet from MuscleNerd a new version of UltraSn0w, the Carrier Unlock tool for jailbroken iPhones, will be available for download tomorrow after the planned MobileSubstrate update. The best part about MuscleNerd’s tweet is this new version of UltraSn0w will be iOS 5 compatible.

The basebands that UltraSn0w currently support are:

  • 01.59.00
  • 04.26.08
  • 05.11.07
  • 05.12.01
  • 05.13.04
  • 06.15.00

Stay tuned to iJailbreak.com as we’ll post updates once the new version of UltraSn0w is released.