Hi, I am new to this so I had some questions before I root. Sorry if they are obvious, but I can't find them by searching. 1. I currently have 1.5 on my sprint hero. In order to root 2.1, do I have to install the 2.1 update from sprint? or can I root to 2.1 from my current 1.5? 2. I once updated another hero to 2.1 and there were MANY bugs including bluetooth through my car speakers, calendar issues, and more. By rooting on 2.1, will that eliminate these bugs? I went back to 1.5 because the 2.1 was unbearable. 3. When in the rooting process, I read at xda that you make a nandroid backup. Does that automatically back up my stock rom? will it back up my 1.5 rom or just a 2.1 rom? 4. I am concerned that if I root 2.1 and it's no good, I will lose my 1.5 rom. How can I prevent that? That's about it for now. Any help would greatly appreciated.