(adsbygoogle = window.adsbygoogle || []).push({}); These are instructions on how to perform a tethered jailbreak of iPhone 4 on the 4.3.5 firmware using RedSn0w for Mac.
If you are on 4.3.3 or lower make sure you do NOT update to iOS 4.3.5. Use the untethered JailbreakMe instead. You can find the appropriate JailbreakMe tutorial here.

Those who want to unlock should make sure not to update without preserving their baseband.

Step One
Create a folder on your desktop called Pwnage

Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 4.3.5 and 4.3.4 firmware from below and place it in the same folder.

4.3.4 (4 GSM): iPhone3,1_4.3.4_8K2_Restore.ipsw
4.3.5 (4 GSM): iPhone3,1_4.3.5_8L1_Restore.ipsw

Extract the RedSn0w zip file by double clicking it.
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Step two
Connect your iPhone to the computer and launch iTunes.

Select your iPhone from the list of devices on the left. Now hold down Option and click the Restore button. Restore is preferred as it won't create any wasted space on your iPhone. Navigate to the Pwnage folder on your desktop and select the 4.3.5 firmware ipsw. Click the Choose button to continue.
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Step Three
Once iTunes has finished updating your iPhone to the desired firmware open the Pwnage folder on your desktop and launch the redsn0w application from the redsn0w folder we extracted earlier.
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Step Four
Once RedSn0w opens click the Browse button

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Step Five

From this window you can select the jailbreak options you would like.

Make sure Cydia is selected and click the Next button to continue
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Step Six
Red snow will guide you through the process of putting your phone into DFW mode for 10 seconds
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Step Seven
Your iphone will reboot
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Step Eight
Once this is complete you will be notified that RedSn0w is done. Click the Finish button. When your iPhone finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard.
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Lastly
BOOT TETHERED
Once RedSn0w has finished jailbreaking your device you will need to boot it tethered. Rerun RedSn0w and this time select Just boot tethered right now from the list of options instead of installing Cydia.

:bro:

woah mang it wrkd thnx a lot now im jailbrken

which is why I didn't update to the new software ha apple patched 4.3.3

yea true! me to but i have the verizion iphone 4 and im on 4.2.8 and i have the ipad 2 on 4.3.3!

nice dude :y: