So, im on the brink of purchasing an ipod touch, and i can buy one new or used... a couple questions that i haven't been quite able to get answers to: 1. what is the firmware i will most likely get on a new ipod touch, and can it be "jailbroken"? 2. are there any differences other than storage between the different ipod touch's? 3. if there is an important firmware to not exceed to jailbreak a touch, is there a way to buy a new touch and know if it has the newer firmware? such as a serial number change, etc...? sorry for the questions that are probably common knowledge among the touch community....and thanks in advance for some answers!