Read carefully and download softwares from the link below if you want your iphone to jailbreak effectively.
Jailbreak iPhone 3g 3GS 4g mc model on iOS 4.1 latest release 0n 8th september 2010 with 100 % working download links.
First of download all these softwares if you want no problems or errors and you will be able to save your time and money.
Download latest working jailbreaking software that works for both win n mac. Its an updated version so download it from link below.(necessary)
Redsnow for windows

Redsnow for mac

Customized iTunes for Jailbreak
Firmware download:
ios 4.1
ios 4.1
other firmwares
ios 4.0
ios 4.0
ios 4.01
ios 4.02
1. Download firmware for your device
2. download redsn0w for mac or pc ( link at the top of info) (on the page scroll
all the way to the bottom)
3. extract firmware (if needed) must be .ipsw format
4. Extract redsnow to your desktop
5. open redsnow
6. Browse for firmware
7. select options ( enable multitasking enable native wallpaper install cydia verbose boot custom recovery logo and boot logo) Does enable wallpaper and multitasking
on ipod touch 2g and iphone 3g
8. Turn off device
9. Follow the on screen instructions to put your device in DFU
10. Next sit back and relax
You can also jailbreak using snowbreeze V1.7 First of all download these softwares
