If you are running the new iOS 6.0.1 which was released by Apple last week and you want to maintain your carrier unlock, you will be delighted to hear that Ultrasn0w fixer has been updated to support this new firmware.
There aren�t that many changes to the new iOS 6.0.1 so if you have been using Ultrasn0w for a long time and you are used to jumping through hoops every time Apple releases an update then you might want to hold off upgrading your firmware until Apple releases something with a few more changes. That being said, bug fixes are bug fixes and if you are one of those people who likes to keep everything up to date, you will be happy to know that you can still maintain your unlock using Ultrasn0w.
In an ideal world there would be no need for carrier unlocks but unfortunately we don�t live in an ideal world and many of us have to do it ourselves. Unlocking your idevice gives you the freedom to choose the carrier you want and this is why Ultrasn0w has become a lifesaver to many. If you have preserved your old and unlockable baseband you will be able to use Ultrasn0w to maintain your carrier unlock. If you haven�t preserved and saved your basebands you could just be out of luck. The updates for Ultrasn0w are still coming in with every update Apple makes so it looks like this tool won�t be dying anytime soon. If you have upgraded to iOS 6.0.1 and you want to keep your device unlocked you can download the new Ultrasn0w now.