How can I get a clean upgrade env?

[#1]

We are using HDP 3.0.0 and it upgraded from 2.6.5. And we faced some issues while doing this upgrade and we did some manually clean in Ambari database. Now we are trying to upgrade from 3.0.0 to 3.0.1. And seems it still have some issues and it show some steps listed in upgrade 2.6.5 to 3.0.0. How can I let the environment ready to upgrade to 3.0.1? I mean how can I do a clean for previous upgrade so that we can do new upgrade? Thanks.

[#2]

Anyone can help me?