I just installed Cydia and Terminal on my iphone4. It seems to jailbreak fine, so the first thing I did was to install the terminal so I could change the passwords. When I tap the terminal icon, it opens for a second then closes. I modified/reinstalled it a couple times. Rebooted the device. I messed with it for a bit, then restored the device and tried it again with no luck. I found a thread that suggest using - Google Mobile Terminal 426. Is that the best solution? Thanks, J.