Hello, I was rooted while I was running 2.0.1 and now I accidentally updated to firmware version 2.1 and now I have the super user permission icon in my menu but if i type su in the terminal emulator it gives me an error. I guess what I am asking is how Can I get back to being rooted and if I have to flash back to 2.0.1 will I lose my phone numbers? Any help would fantastic.