There have been many rumors flying around the internet about the fact that updating to the 3.0 Firmware will essentialy "Brick" your device. Here are the facts that i have gathered from looking around. The 3.0 Firmware needs to be registered to the device to run. The 3.0 Firmware for the iPhone 3G will update the baseband. The 3.0 Firmware for all over devices can be restored from. The reason that people are claiming the 3.0 Firmware is bricking their devices is either that.. They are not a registered developer and therefore the device wont sync with iTunes. Or that when iPhone 3G users go to downgrade to 2.2.1 from 3.0, they find that its not working due to the fact that it still has the 3.0 Baseband installed. Therefore we have this problem, people are downloading the 3.0 firmware for the 3G, installing it (and updating the baseband), getting to the point where iTunes wont let it run because they are not registered. The user thinks, screw this im going back to 2.2.1. They restore back to 2.2.1 and realise that it wont work because its still using the 3.0 baseband. Now, i really dont see how the iPod Touches can be bricked or rendered inoperatable due to the fact that they have no baseband to update and all that is changed is the firmware. A DFU mode restore should be able to put it back into the 2.2.1 firmware. The problem with the "not being able to sync" thing, is due to an activation problem. This is when the iPhone has to be activated when you restore in order to run. It was like this before. Now, seeing as the iPod Touch dosnt have to be activated, it is possible that this problem wont even arrise. All theory of course. Not sure if 3.0 updates the iPhone 2G (1st Generation)'s baseband, if it did, it would be the same case as the 3G. Therefore, unless you are a developer and can run the firmware, dont install it. Its really not worth it... In a nutshell... IF YOU UPDATE TO THIS FIRMWARE YOUR BASEBAND WILL BE UPDATED AND EVEN IF YOU DOWNGRADE TO 2.2.1 YOU WILL STILL HAVE THE 3.0 BASEBAND WHICH WILL NOT WORK WITH THE 2.2.1 FIRMWARE SO YOU LOSE THE PHONE FUNCTION. All this information is just theory and based upon things i have come across on the internet over the last few hours. I am not held liable if you use this information thinking you will not have problems and then your device breaks.