UPDATE: Обязательно (!) думайте перед тем, как что-нибудь сделать. Читайте внимательно и еще раз думайте. Не понятно - читайте снова. Спрашивайте до, а не после.
UPDATE 2: Если у вас 05.13 baseband и ниже - она ломается старыми способами, не надо обновляться до 05.14, 05.15 и 06.15. Хочется перейти на 4.1/4.2 - тогда делайте кастом прошивку с помощью pwnagetool.
UPDATE: Please, consider reading our Jailbreak & Unlock FAQ, especially if you have questions or troubles.
Данное пошаговое руководство позволит вам сделать джейлбрейк и анлок iPhone 3G на iOS 4.2.1 с помощью PwnageTool 4.1.3 под Mac OS X. Здесь также будут даны инструкции по обновлению baseband, если это необходимо для анлока (отвязки от оператора сотовой связи).
MuscleNerd has recently announced via tweeter that ultrasn0w unlock for iPhone is now fully working on iOS 4.2.1
Finally got ultrasn0w working fully on 4.2.1. Apple inadvertently(!) broke ultrasn0w via aggressive compiler optimization
MuscleNerd previously announced that the ultrasn0w unlock should be available by Sunday for the iPhone 3G and iPhone 3GS. The unlock for the iPhone 4 will take much more time.
UPDATE: this is not a reason for update to iOS 4.2.1, wait for utilities.
Early this month we reported that Apple delayed the release of iOS 4.2 due to the Wi-Fi connection issues. Apple even released a second GM build for iPad to address the Wi-Fi issues. Finally, the iOS 4.2.1 went public. But iPad users still report that they experience Wi-Fi problems after upgrading to iOS 4.2.1. Some iPads fail to join a known WiFi network, some connect but connection drops after 5-10 minutes, some don’t drop the connection but are incredibly slow at rendering web pages and, for example, Youtube videos. Though the iOS 4.2.1 offers its users some fixes, including router reboots, resetting the iPad’s network settings and full restore to iOS 4.2.1, they seem not to work. Nevertheless not every an iPad user experiences such problems.
DevTeam hacker MuscleNerd tweeted that they after releasing redsn0w jailbreak for 4.2 the team can start working on iPhone unlock. Users can expect the unlock for the iPhone 3G and iPhone 3GS this week. The iPhone 4 unlock will take more time and no concrete info is available about that yet.
The ultrasn0w unlock will be released for iOS 4.1 firmware. So is you need unlock, do not update to iOS 4.2.1.
DevTeam worked hard for the last several hours and released jailbreak tool for iOS 4.2.1. It is redsn0w 0.9.6 b4.
As usual we remind all ultrasn0w unlockers please stay away from this official firmware. Wait for the ability to create custom 4.2.1 IPSWs that don’t update your baseband!
New redsn0w 0.9.6 b4 uses limera1n exploit and will successfully jailbreak all devices. The only problem is that it is a tethered jailbreak, which means you will have to plug it to a computer and rerun redsn0w on every reboot. This so called tethered or semi-tethered jailbreak. This condition applies to iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC model), iPod touch 3G and iPod touch 4G. Hackers are working hard to create untethered jailbreak for these devices. To use future untethered jailbreak you need to save SHSH keys for iOS 4.1 using TinyUmbrella utility or directly in Cydia.
Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (non-MC model) can be jailbroken-untethered right now using this latest version of RedSn0w.
Apple finally released iOS 4.2 for iPhone 3G/3GS/4, iPad, iPod Touch 2G/3G/4G and even Apple TV 2G. Lot's of new features, especially for iPad. Apple calls new firmware 4.2, however the version is actually 4.2.1. Here are the download links:
While we were all waiting for Apple to finally release iOS 4.2 to the general public, the company seeded a new golden master of iOS 4.2, known as iOS 4.2.1, to developers. Apple has instructed developers not to resubmit their applications under the new build, suggesting that this new version only fixes some minute bugs and no new features have been added.
Sn0wBreeze 2.9.6(pwnagetool for windows, supports untethered jailbreak of iOS 5.1.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad and Apple TV 2G)
Sn0wBreeze 2.9.3(pwnagetool for windows, supports tethered jailbreak of iOS 5.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad; untethered for iPhone 3GS with old bootrom; untethered for iOS 5.0.1, iOS 4, iOS 3 supports Apple TV 2G)
Sn0wBreeze 2.8b11(pwnagetool for windows, supports iOS 5, iOS 5.0.1, tethered jailbreak for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad, Apple TV 2G; untethered for iPhone 3GS with old bootrom)
Current version is ultrasn0w 1.2.3, download in Cydia (unlock for iPhone 4, iPhone 3GS, iPhone 3G, firmwares 3.0-4.3.3; it supports basebands 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00)