First of all, if this is in the wrong section, Sorryyyy. I will show you how to get your iDevice into Recovery Mode and DFU Mode. DFU and Recovery are not the same thing. While in DFU mode, your device is kind of forced to restore. In Recovery Mode, it doesn't always have to restore. First off, if you mess up entering DFU, don't worry, just hard reset (hold both top and home buttons down for 10 seconds) until it reboots, then try again. HOW TO ENTER RECOVERY MODE Since this is easier, let's start with this. 1. Open iTunes on your PC/Mac 2. Make sure your device is OFF and UNPLUGGED. 3. Hold down the home button. 4. Plug your device in. 5. The device should boot, show the Apple logo, and after a few seconds, the "Connect to iTunes" screen. Ta da! You just entered Recovery Mode, restore in iTunes now! HOW TO ENTER DFU MODE This is the harder one, I suggest you have someone with a stopwatch. :3 There are some methods to enter DFU mode without pressing anything or timing anything, it's done through a computer. I have not tried this, try at your own risk. DFU stands for Device Firmware Upgrade. 1. Start iTunes on your PC/Mac. Make sure volumes up! 2. Make sure the iDevice is ON and PLUGGED in. 3. Hold the top buttons and home buttons for about 10 seconds 4. Then let go of the top button and keep holding the home button. 5. If you hear sounds from your computer, like beeps, that is COMPLETELY NORMAL. 6. iTunes should say it has detected an "iPod" or "iPhone" in Recovery Mode. Normal! 7. If the screen shows "Connect to iTunes" that is NOT DFU mode. The screen should be black, and the device should be displayed in iTunes. 8. Restore. Please leave a comment telling me if I posted false info. Constructive Criticism, leave a compliment if you feel like doing so. -narwal13
There are already guides on how to do this, but I'm sure someone will read this and benefit from it. Anywhoo, you did a pretty good job explaining it.
I just fixed my problem after fighting with the iPhone 4 and couple of different laptops hehehe, well actually i think it is all about timing to get the iPhone into recovery mode. Read more at http://www.restore-iphone-backup.com/
Click on http://www.iphonephotorecovery.info/recoverundelete-photosfromiphone5in-dfumode.php if you want to enter DFU mode on your iPhone.