Jailbreak iOS 4.0.1 for iPhone 3G [ONLY] with Redsn0w

Redsn0w Tool from Dev-Team

For Windows –  Download here
For Mac OS    –  Download here

Step One : Create a folder on desktop and name it whatever you want. Now put all your downloaded files in the created folder. Now connect your iPhone to the computer and launch RedSn0w from Created folder.
Step Two : Now here comes the tricky part, when redsn0w ask you to select firmware, browse to iOS 4.0 ipsw instead of iOS 4.01
Step Two : Click the Open button to continue.


Step Three : In next Window check the Install Cydia option. You can select / unselect more advanced options like verbose boot, multitasking, wallpaper etc. Once you selected all required options click on next button.
Step Four : Now turn off your iPhone but make sure it is still plugged in to USB port. If you satisfies this term then click next to proceed the next step is to put your iPhone in DFU mode.
Step Five : To put your iPhone in to DFU mode follow the onscreen instructions as follows Hold the Power button for 3 seconds, Hold the Home and Power buttons for 10 seconds, then release the Power button and continuing holding the Home button until your iPhone is in DFU mode.



Step Six : If all goes well, and you put your iPhone in DFU mode successfully then the following screen will appear otherwise you will be prompted to do from Step Five.


Step Seven : That’s it after 5 to 8 minute of process you will get your hands on a Jailbreaked iPhone.