Can't uninstall BlackRose, Need Help

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http://forum.xda-developers.com – Hi, I undusted my nexus one from its box to sell it. It was working fine the last time I used it but now I can't access the recovery nor boot it normally. Tried to do unroot procedure but bootloader won't update and show "Fail-PU" (probably because I'm on BlackRose). Then I downloaded the BlackRose ZIP and ran the .exe to uninstall. Now I'm stuck at "waiting for device" while the phone is on Fastboot mode. I probably need to be on ADB but I can't boot the phone or go to recovery. That's where I need help Thanks (HowTos)