Guide : To put ur Iphone in restore mode

To put ur phone in restore mode follow this...

Method 1 :
1) Turn off ur phone
2) Now hold the menu button and connect ur phone to the USB cable or attach it to the Dock.
3) DO NOT leave the menu button unless u see a picture with a connect symbol on it.

Once u see that on ur display release the menu button. Now your phone is in restore mode

Method 2 :
If not hold menu button and sleep button until u see the connect screen.. this will also take u to restore mode..

To put ur phone in DFU mode follow this...

Method 1:
1) down dfu.zip from here... i have uploaded here...
http://rapidshare.com/files/120900894/dfu.zip.html
2) Extract it to C: or any drive u want.. but i will give an explantion assuming u r going to extract it in c:\
3) click on Start>>Run and type 'cmd'
4) connect ur phone to the computer
5) type these commands

cd C:\dfu
dfu iBSS.m68ap.RELEASE.dfu

now u should see white screen in ur phone which means that ur phone is in DFU mode...

Method 2 :

1) Turn off you phone
2) Hold Menu button and connect it to the usb cable
3) your phone should be in restore mode now
4) Now hold both menu button and sleep button together for **10 seconds** and release the Sleep button on the 10th second but keep holding the menu button for another 11 seconds
5) your display will be blank but your itunes will say that you phone is in Restore mode. Thats DFU mode.

If you still have any doubts feel free to contact me or post in comments
Thanks