Okay I have been thinking about rooting my phone ever since i got it, the Evo is my first Android phone so I'm kinda new to all of this. When Z4Root came out I thought about using it but then noticed that it did not work on NAND devices. The reason I have not rooted is because of the warranty stuff. So I have a few questions I need to ask. I see that with Z4root they have added an option for temporary root which will work on NAND devices, if I do use this will they be able to tell my phone was rooted after a restart, will the temporary root allow me to use apps such as wireless tether for root users, if I root and have insurance on my phone will they not acknowledge the insurance since it is rooted, and if I unroot the phone by restarting will the warranty still be acknowledged.