Kevin OQuinn
AC Team Emeritus
got it. I did not realize that whenever they release an update it also flashes the current bios into a new code and that they were locked. It also helps to realize that each phone is specific. Also that you can only back up your rom after you have rooted your phone.
So what I need to do is Roll back to 2.1, then root, then back up with nandroid. (which the options should now show up in recovery mode since the phone has been rooted?) Then I can do what I like and go back to the 2.1 rooted rom at any time if I screw something up.
correct
Now my next question is. When they do successfully Root 2.2, am I going to have to roll back to stock 2.2 (unrooted) or will it just be flashable at anypoint like you can do now with unrevoked.
Once you roll back to 2.1 and root it you can then flash any ROM based off of 2.2, like the AC ROM in the sticky. When they successfully root stock 2.2 you won't need to do that because you did the roll back method to root. Once you have root you can flash any ROM you want. You will never need to go back to stock (unless you need to exchange your phone, then I recommend it).
See above.