A co-worker approached me this morning with his iPhone 4. He detailed to me how he attempted to update from 4.1 to the current firmware. He decided to do so by restoring his phone as new via iTunes. Realizing his phone was stuck a little over half way through the restore he unplugged it. He then did a force quit on his Mac to close iTunes. Finally after going round and round with his iPhone he googled his problem and began to methodically attempt various methods, including placing his phone in DFU mode, gave up. As a last resort he downloaded iTunes on his wife's HP Windows computer, plugged in his iPhone and tried to restore again. Surprisingly this time it took and his iPhone restored and updated. He then loaded it back on his Mac and iTunes recognized it and allowed him to place his apps and music back on his device. He told me it is running smoothly but his concern is he may have weakened his iPhone due to three hours of jacking it around (his words). I quickly reassured him I believe his phone is fine but later got kind of thinking about it and now I'm scone guessing my opinion. What say you? Is his iPhone even slightly now impaired?