I have the exact same problem. I am on a rooted Droid 2 running GB and have the Liberty rom version 0.7. I was updating to Liberty version 0.8 but I forgot to wipe the phone! The rom successfully installed, but when I turn the phone on, I get tons of popups telling me that all my phone's applications are failing! They do not go away no matter how many windows I close, they repeat indefinitely. It will not go into bootstrap and I tried recovery mode, but your problem is the same as mine! I backed up my rom, but with the inability to go into bootstrap and no access to recovery mode, I am stuck! I'm trying to learn how to do sbf recovery as a last resort.