The iPhone Dev-Team has updated RedSn0w to easily boot devices that are running a tethered jailbreak.

We’ve updated redsn0w to include “one-click” support for those of you running the tethered 4.2.1 jailbreak. Using command-line arguments, you can now bypass the screens you’d normally see as you use redsn0w to “Just boot tethered for now”.

Disclaimer:

This guide is for information and educational purposes only. Use it at your own risk, we cannot be held responsible if anything goes wrong.

Available command line arguments:

• -j to ask Redsn0w to “Just boot now tethered for now”
• -i to specify your reference IPSW
• -o for old-bootrom iPod touch 2G and iPhone 3GS
• -b to specify your own boot logo png

For example, using Redsn0w for Mac and performing a tethered boot of an iPod touch 4G jailbroken at 4.2.1 would consist of the following commands:

open ~/Desktop/redsn0w.app —args -j \ ~/Desktop/iPod4,1_4.2.1_8C148_Restore.ipsw

This assumes that both Redsn0w and the IPSW are on your OS X desktop (so make sure to modify the command if necessary OR move your files to your desktop). Included in the zip is an example script file that you can double click on to launch Redsn0w (similar to the example above). The Windows example assumes everything is in C:\ for obvious reasons). A quick note for Mac users here – be sure to change the permissions of your custom *.command files to allow execution.)

This should help ease the pain of the tethered jailbreak until @comex releases his 4.2.1 untethered jailbreak tool (JailbreakMe 3.0) or until the Greenpois0n utility is released by @p0sixninja.

Note:

• Please upgrade to iTunes 10.1 for best results.
• Windows 7 users should run redsn0w in “XP Compatibility” Mode.
• Make sure you’re using a USB 2.0 port.

Download RedSn0w 0.9.6rc7:

• Download Redsn0w 0.9.6rc7 for Mac [Mirror 1] [Mirror 2]
• Download Redsn0w 0.9.6rc7 for Win [Mirror 1] [Mirror 2]
• Download iTunes 10.1.1 for Mac/Win [Direct Link]
• Download iOS 4.2.1 [Links]

We have created step-by-step guides on how to perform a quick boot using Redsn0w 0.9.6rc7 which you can find below:

• [How To] Boot Your Tethered Jailbroken iPhone (Mac)
• [How To] Boot Your Tethered Jailbroken iPhone (Windows)

Stay tuned for the latest updates regarding jailbreaking and unlocking your iOS devices by following us on Twitterand/or subscribing to our RSS feed.

[Source: The iPhone Dev-Team(blog)]

Authors: _GadgetNews

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