SAMMIE said:
Thanks alot guys for all of your help !!
But now i would like to know how to jailbreak this phone . Any help would be appreciated . Thanks !!
Being that it is an iPhone 3G it cannot run on the latest iOS version which is 5.1.1.
You'll have to use an outdated iOS for an outdated device.
The latest version an iPhone 3G can run on is 4.2.1.
I would download the 4.2.1 iPSW file from here:
http://theiphonewiki.com/wiki/index.php?title=firmware
Then download redsn0w from here:
http://blog.iphone-dev.org/
Save the 4.2.1 iPSW to your desktop.
Put the phone in DFU mode then open iTunes.
click Okay.
Now hold down the shift key on the keyboard..*while* you click the restore button in iTunes.
A window will pop up. Go to your desktop and double click in the 4.2.1 iPSW and allow iTunes to restore the device.
Your computer must be connected to the Internet for the device to restore, as Apple had to verify that you are using the latest iOS version...which in your iPhone 3G's case is 4.2.1.
Once the restore is done...you can jailbreak with redsn0w.
Watch a YouTube video on using redsn0w or something...that way you see exactly how it's done. Really easy.
Just do NOT enter DFU mode while the device is on...shut down device completely...then enter DFU mode. Some people will say it is okay to enter DFU while device is on....it is not.