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XOOPS2_mod_newbb_2.02.zip is the latest release, yes.
If you haven't got any data to loose from newbb1, then you could upload the original xoops_version.php file from newbb1, then uninstall the module through the XOOPS system admin->modules.
Or first try the upgrade script from newbb2, it should fix the situation you're in now. And it has the advantage of not having to loose data.