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Originally Posted by BenS
Alright fast I think I understand this correctly. First I have had the OTA applied and have rooted with unrevoked. So my understanding is that I need to flash the two roms that will downgrade my roms and unroot my device. 2nd I need to use the unroot the device following your outline, 3rd use the auto update from the rom manager app and then create the nandroid back up. Finally flash a custom Rom. Quick question what does the recovery do and the nandroid back up is a copy of what exactly, the unrooted "stock" rom that I just auto recovered and I would need this to restore the device back to stock for repair purposes.
Hi winmo, I'm sure you are awake and nice to see you here from the NRGZ thread
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You have the right steps.
Downgrade and start over.
Recovery is the step that allows you to flash roms. Without recovery, your rooted phone has Superuser Permissions, but your actual rom is not rooted. It's a good idea to at least install a rooted rom on a rooted device. Even if it's just the stock rom rooted w/ no other changes.
Nandroid backup is a backup of the Nand memory or something like that. I'm not sure what exactly it is, but I know the developers are working hard to crack it and get write access to it. Which will give us more possibilities on the phone. For know, they just suggest backing it up in case there is some catastrophic error when you're doing stuff to the phone. Other than that, I have no idea. I just learned this stuff on Friday after I got my Evo.
If you every have to return the device to sprint, you should return it to stock.
Just follow the downgrade directions.