Help please! I have a 1st generation iphone. It is unlocked and jailbroken to run on my non ATT service. It was working fine then the other day I went into cydia to see if there was anything for marking all emails as read without having to open each email. Cydia crashed and now will not run. It starts for a second, the little 'busy' animation thingie runs for a second then boom, it totally vaporizes and goes back to the desktop! How can I fix this? I don't want to start all over again, that's a nightmare. Please tell me there's an easy way to fix this!!