Hey, just so you know you're not crazy, I was in the same boat as you. I guess I still am: I rooted my phone, made a back up, did everything by the book and flashed liberty, and then got stuck in the bootloader without access to CM Recovery and had to SBF. I'm rooted again and if you want Liberty again like I plan to do, I believe that the ROM file you need to use is specifically altered for .621, not .605. Actually, follow this link and read the two replies by Goose306. It explains our situation. The process is not as simple as everyone else has it. Still very simple though.