ALL Fixed!!
Hey guys! It turns out that the connection in the new screen had been faulty, AND the genius in the Apple store had been using counterfeit, non-apple certified parts to do repairs for people. I went in to the store, and I explained the issue, didn't even have to call for a manager.. The 4 guys that were baffled about its problem took it apart in front of me, and the problem was revealed. They then swapped out my phone for a new one, and activated it for me. They fired "Francisco" and everything turned out okay. They told me, that I shouldn't upgrade to 3.0 again, just wait for the release, although, I'm not sure yet. They also said that, "Using the 3.0 firmware, while the system is in beta, voids all software related issued warranties, but doesn't affect the hardware." Basically, don't go into the Apple Store saying you wanna downgrade, but if your hdd fails, or your screen cracks, they'll help you. Thanks everyone for your help! You guys saved me...