I need a lot of help. I just bought a second hand Iphone 3g for my mom for christmas. It is locked to fido, she is on telus. It is running firmware 4.2.1 Since it doesn't have a valid sim card in it, it won't let me use it. The only function is emergency call. Here is what I would like to do to it: Jailbreak it, unlock it, then reset it so it's unlocked without any jailbreak. Once that's done I want to downgrade the firmware to a lower version (optional but would be appreciated) because 4.2.1 is very slow on the iphone. HOW CAN I DO THIS? Can you jailbreak unlock then reset it and still keep it unlocked??!??! help!