I am opening a cell phone repair shop here in Boise, Idaho. I have been repairing cell phones on the side for some time now. I have that down. What I need help with is flashing and unlocking cell phones. I know there are all sorts of flashing and unlocking boxes out there. How do they work? Is there a good one out there that will cover all of the phones? Do you have to buy one for each brand of phone? Can you update them when new phones come out? How do you flash a phone? How do you unlock a phone? What about iPhones? I am a newbie when it comes to this, I need some serious help. If you know a lot about this type of thing, please leave me some info or contact me, it would be greatly appreciated.