I nearly developed brain fatigue trying to figure this out. I have a verizon galaxy tab which I upgraded to GB with the firmware I downloaded from oldmacnut. Then I tried to get CWM working on this. The installation goes well until when I rebooted. The system hung at the verizon logo. Nothing I did could correct this. Until I flashed back to Froyo. Apparently this works only on Froyo. Now I have CWM 3.0.0.0 on my Galaxy Tab. Heaven...
Correct me if I'm wrong, but you need the EF01 kernel / cwm recovery to work with EF01 GB build. This is what I'm currently running. Rom manager doesn't acknowledge it as a valid recovery, but there are no Verizon roms there, so it doesn't matter.
Sent from my SCH-I800 using xda premium