Answer to: How do I put my iPhone 3G in DFU Mode?When you are stuck on iPhone dead or loop screen, you can use recovery mode to fix this instead of resetting it because reset would erase all data and settings so you may lose your precious data. if you use recovery mode, you don't need to worry about data loss. You also don't need to press home or power button if you use the famous tool used to enter and exit recovery mode called FonePaw iPhone Data Recovery.
Answer to: Recover lost data (iPhone does sync)Directly scan and recover deleted photos from iPhone with FonePaw iPhone Data Recovery. a) Connect your iPhone to the computer b) Enter DFU mode and scan iPhone c) Preview and recover iPhone photos Or just recover deleted photos from iCloud or iTunes backus.