Jailbreak iPhone OS 4.0 Beta 4 with Redsn0w 0.9.5 Beta 4

The iPhone Dev-Team has released redsn0w 0.9.5b4 to jailbreak iPhone OS 4.0 beta 4 so that the developers of jailbreak community can fix the issues with their apps and get them ready before the availability of iPhone OS 4.0. So, Redsn0w 0.9.5b4 is meant for developers only NOT for end users.

NOTE:

This Jailbreak is for Developers ONLY

This RedSn0w 0.9.5 Beta 4 supports:

• iPhone 3G only (for now)
• Mac OSX only (for now)
• the 4.0beta1 Firmware only (for now)

YOU SHOULD STAY CLEAR OF THIS BETA SOFTWARE IF YOU RELY ON A CARRIER UNLOCK.

Please note that Redsn0w 0.9.5 beta 4 is a Jailbreak tool NOT an unlock. iPhone OS 4.0 beta 4 contains a Baseband update which is not unlockable.

This is a beta release of redsn0w targeted at developers of jailbreak community so they can resolve the issues with their apps. It uses the same pwnage2 DFU-mode exploit that we’ve been using since the 2.x days. Nothing new is revealed to Apple, and it’s not applicable to the iPad.

This beta version of redsn0w does not perform hactivation. You will need a properly-registered developer UDID with Apple to get past the activation screen. For similar reasons, there is no Windows version of this beta redsn0w (since apps are developed on MacOSX). The beta version of redsn0w only works if your device has already been upgraded to the stock 4.0beta1/beta4 IPSW from Apple, which contains a baseband update. If you installed that IPSW, you’ve already lost the carrier unlock until the next planned release of ultrasn0w and blacksn0w.

How To Use RedSn0w?

You can download Redsn0w 0.9.5b4 from here, and follow the guide here.

You can download iPhone OS 4.0 beta 4 from iPhone Dev Center only if you’re a registered Apple developer.

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