It really needs to be made clearer that to jailbreak version 3.3, you need to use the file corresponding to your kindle model suffixed by -3.2.1........
I didn't have time to read all 157 pages of this thread, somehow missed the ">=" 3.2.1 in the first post, and ended up googling a bunch of different forums for far too long, finding a bunch of different people having the identical issue - Trying to jailbreak 3.3 with the non 3.2.1 jailbreak...
Some people were reverting back to 0.5N to get it to work...
You need a big
"Hey Idiots, if you have version 3.3, use this firmware update"
Would have saved me an hour