[Q] Revert back to complete stock

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I'm going to use a XTC clip to get s-off on my IncS and was wondering how to revert back to stock if I need to warranty. My phone is from Optus so I know I can use the official ruu but I'm not sure of what that contains ie recovery/hboot. Also I guess it would be best if I could revert to s-on as well. Is all of this possible atm?

Sent from my HTC Incredible S using XDA Premium App

Once S-OFF the phone cannot be put back to S-ON ...

Sent from my HTC Incredible S using XDA App