Re: Returning for warranty, what needs to be reverted?
 

Ok it appears the stock ROM flashes everything including radio, so i will take my chance with it.

Re: Returning for warranty, what needs to be reverted?
 

From what I understand, if you install the Shipped ROM image, that includes the stock radio as well, so you don't have to worry about reverting the radio image. That said, most VZW techs (as most other carrier techs are, ATT included) are inept and probably know less than you about the phones and probably would've even be able to tell stock from custom ROM. Of course that doesn't mean you may get unlucky and get the one knowledgeable tech on his bad day that will just stick it to you.

Re: Returning for warranty, what needs to be reverted?
 

That and if you have a custom ROM that has different startup images, they may catch that.