These are instructions on how to
If you want to jailbreak a lower firmware version you can find the appropriate tutorial here.You can find the Tutorial here.
Create a folder on your desktop called Pwnage
Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 5.0 firmware from the iOS Dev Center and place it in the same folder.
5.0b1 (3GS): iPhone2,1_5.0_9A5220p_Restore.ipsw
Extract the RedSn0w zip file into the same folder.
Connect your to the computer and launch iTunes.
Select yourfrom the list of devices on the left. Now hold down Shift and click the Restorebutton. 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 5.0 firmware ipsw. Click the Openbutton to continue.
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.
**Windows 7 users may need to run RedSn0w in Vista compatibility mode. You can do this by right clicking the executable and selecting Properties from the contextual menu
Once RedSn0w opens click the Browse button
Select the 5.0 firmware ipsw we placed in the Pwnage folder on our desktop then click Open.
Once the firmware has been verified click the Next button to continue.
RedSn0w will now prepare the jailbreak data
From this window you can select the jailbreak options you would like. Make sure is selected and click the Next button to continue
Please plug your iPhone into the computer and make sure its OFF then click the Next button.
RedSn0w wіƖƖ now guide уου through thе steps tο ɡеt іntο DFU mode. Yου саn find more hеƖр wіth DFU mode here.
Hold down both thе Home button аnԁ thе Power button fοr 10 seconds.
Release thе Power button аnԁ continue holding thе Home button until RedSn0w detects thе device.
Yουr iPhone wіƖƖ now reboot
RedSn0w will then begin uploading the new RAM Disk and Kernel.
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 on the SpringBoard.
Since this is a tethered jailbreak you must use Redsn0w to help you boot back into your jailbroken device if its powered off for any reason. Simply connect your iPhone to the computer, launch RedSn0w, select Just boot tethered right now from the options window and click Next to have RedSn0w boot your device.
*As usual a big thanks to the iPhone Dev-Teams, Geohot, and Geohot for their hard work and contribution to the iPhone community.
**Windows 7 users can try running RedSn0w as an administrator in Windows Vista or XP compatibility mode if you experience any difficulties.