Dev Team have also announced that Ultrasn0w itself will be benefitting from an update in the next few days, which will bring support for the iOS 5.1 firmware. The promised update will be music to unlockers ears, but will not bring any additional baseband support and will only offer the ability to unlock devices and basebands which are currently offered by the 1.2.5 version of the tool. The currently supported baseband models are: 01.59.00 04.26.08 05.11.07 05.13.01 05.12.01 06.15.00 If you are a jailbreak fan who requires an Ultrasn0w unlock, but can’t dig deep enough inside to find the patience required to wait a few days until the Dev Team gets the latest release fine tuned, then a developer known as zmaster has you covered. He has released a tool on his own repository that goes by the name of ‘Ultrasn0w Fixer‘, with no prizes for guessing what it does. The package is designed to be an interim fix for Ultrasn0w, meaning that devices running iOS 5.1 can install the Fixer package in the first instance, then install the current version of Ultrasn0w which will provide the necessary unlock as long as the device and baseband are supported. This particular Ultrasn0w fixer package is modified from an earlier version from a different developer and can be installed by following a couple of simple steps. NOTE: The following instructions requires your iPhone to be jailbroken on iOS 5.1 using custom firmware with old baseband preserved. For jailbreaking the latest iOS 5.1 (tethered), follow the instructions posted here to jailbreak using Redsn0w, or here to jailbreak using Sn0wbreeze. Step 1: Launch Cydia and select the ‘Manage‘ tab from the tool bar at the bottom of the application. Select ‘Sources’ from the resultant list. Step 2: Tap the ‘Edit‘ option in the top right hand corner of the screen before selecting the ‘Add‘ button on the left hand side of the tool bar. Step 3: In the pop up alert view enter the repository URL which is ‘<Bạn vui lòng đăng nhập hoặc đăng ký để xem được nội dung này!> , then press ‘Add Source‘. Step 4: After the repository has refreshed and finished loading sources, tap on the repo name in the sources list which will display the Ultrasn0w Fixer utility. Step 5: Select the Fixer utility, pressing ‘Install‘ in the top right hand corner. Confirm the installation and then wait for the process to be completed. Step 6: Now that the Fixer package is complete, the current Ultrasn0w 1.2.5 software needs to be installed. Select the ‘Search’ option from the bottom of Cydia, typing in ‘Ultrasn0w‘ and hitting the ‘Search‘ button. Step 7: When the Ultrasn0w tool appears, select it from the table and then select ‘Install’ as per step 5. After the installation has been confirmed and processed, the device should be unlocked as long as it meets the hardware and baseband requirements. As a side note, it is worth mentioning that the developer has stated that the Ultrasn0w Fixer tool must be installed prior to the Dev Team’s Ultrasn0w being installed upon the device.