![]() Since then, I've spent over a week trying to figure out what can be done to just get it back to a state where it's clean, then jailbreak and unlock. I managed to unbrick the phone twice after doing god-knows-what, but have been unsuccessful in getting it back to the unlocked state. I've also been forced into taking a crash-course on all the terminology and methods of jailbreaking and unlocking an iPhone. I've since learned my lesson the hard way that the iPhone isn't like every other phone I've had until now, and that Apple has made some massively evil business decisions that screw over the end user in ways that shouldn't be legal. That's roughly where most of the problems started. The phone showed the USB-iTunes logo, and was effectively bricked. When I got it back, I saw that there were some programs that I didn't recognize on the phone, so I decided to reset it through the phone's Settings -> General -> Reset -> Erase All Content and Settings. ![]() The only problem is that it was locked on Rogers (Canada), and that the LCD screen had a few burnt-out pixels. Luckily, I have awesome friends, and one just happened to have an iPhone 3G 8GB lying around in a drawer. While it's otherwise fully functioning, the only way I can actually have a phone conversation is through the earpiece, a massive annoyance. Update: Now you can jailbreak iOS 4.2.1 untethered with Pwnagetool 4.2 (Mac) and Sn0wbreeze 2.2 (Windows).My beloved Sony Ericsson W595 took an unfortunate dive into a bucket of water, completely killing the microphone. We can expect a full, un-tethered iOS 4.2.1 jailbreak, and an Ultrasn0w unlock very soon. A non boot-tethered device will show a Grey or White Cydia icon instead of the bright one. iOS 4.2.1 tethered jailbreakĪfter that you can access Cydia, or SSH into the device. So even a jailbroken device in this category should use Redsn0w again and boot it to the tethered jailbreak mode as shown below. As said earlier, Redsn0w 0.9.6 b4 is a tethered jailbreak for iPhone 4, iPhone 3G S ( new model), iPad, iPod Touch 4G, 3G, 2G (MC) and iPad. Cydia should be there in your Springboard.ĩ. If your are on an iPhone 3G, iPhone 3G S ( old iBoot ROM) or iPod Touch 2G ( model not starting with MC), steps to your untethered iOS 4.2.1 jailbreak completes here. Redsn0w 0.9.6 b4 will now install iOS 4.2.1 jailbreak files in your iPhone, iPod Touch or iPad using the Limera1n exploit.Ĩ. Just follow the steps given in the Redsn0w 0.9.6 b4 UI, if you are not sure about this.ħ. Press Power OFF button and enter into the DFU mode. At this point you need to check Install Cydia option and proceed.Ħ. If you have pointed it to the correct file, it will show something as given above. Open Redsn0w and point it to the downloaded iOS 4.2.1 ipsw file. ![]() Download Redsn0w 0.9.6 b4 for Windows or Mac from Hotfile here.ģ. Download iOS 4.2 ipsw corresponding to your iPhone, iPod Touch or iPad here.Ģ. Follow our step by step guide to jailbreak iOS 4.2.1 using Redsn0w.ġ. So until someone releases a complete working untethered jailbreak for iOS 4.2, Redsn0w 0.9.6 b4 is the only option to get Cydia working in your device. However, Redsn0w 0.9.6 b4 support un-tethered jailbreak on iPhone models with old iBoot ROM and in iPod Touch 2G models. So if you are rebooting your jailbroken idevice, you should be near a PC or Mac to take it to the jailbreak mode. It is based on Geohot’s iboot exploit in Limera1n, and is a tethered jailbreak. The new Redsn0w 0.9.6 b4 enables iOS 4.2.1 jailbreak on iPhone, iPod Touch and iPad. The iPhone-Dev team today released an updated version of Redsn0w that can be used to jailbreak iOS 4.2.1.
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