iPhone Dev Team has released another beta version of RedSn0w 0.9.7b4, This is an Untethered Jailbreak tool for iOS 4.2.1. As you all know this is a testing version so iPhone Dev Team are finding bugs in the Beta so they can fix it and release a more stable version of RedSn0w for Untethered Jailbreak of iOS 4.2.1. This version has a Usbmuxd built in the Tool so no need to do it manually while Jailbreaking the device.From iPhone Dev Team Blog:
The fourth beta is now available (testers ONLY please!). Starting with this version, redsn0w no longer requires you to install and run a separate program for the usbmux (this was a non-trivial procedure for many). It’s okay to keep that program running if you normally use it for ssh anyway. We also think we’ve fixed a race condition in the GUI that was causing redsn0w to crash during the “Preparing JB Monte Files” step. Nothing at all has changed on the iPhone side (where the main issues are still just Bluetooth and Skype).
Thanks to everyone who’s helped us test so far! We believe this is the last big code change. If beta4 goes smoothly, we can move on to opening up to Windows testers, the remaining devices, and fixing the Bluetooth and Skype issues.
Next Beta of RedSn0w 0.9.7 will include Windows compatibility! Stay tuned!
If your device is currently jailbroken with one of the previous betas, please do a fresh restore first.
You can follow our guide here on How To: Achieve Untethered Jailbreak on iOS 4.2.1 iPhone 4, iPod touch 4G and iPad [Mac Only]. Note: As this Beta version already has a Usbmuxd so exclude Step 2 and 6 while following this guide.
Download RedSn0w 0.9.7b4 here for Mac OS X
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