Root won't upgrade even without SU and root

[artdent]

Hi,
I have a Droid Razr Maxx (sort of -- I added the battery to the original).

I also added a rom (2.3.6 I think). Now Verizon won't let me upgrade the phone. Upgrade fails even though I've removed all traces of Superuser and the phone shows it's no longer rooted. But it gets about 30 percent through loading an upgrade and crashed back to where I was. I tried a factory reset, but even this didn't get me past the 30% mark as per above.

A Verizon store guy says all the factory reset does is take me back to original condition of the moded rom. Is this true? Unfortunately I was too much of a Newbie to make a backup of the original rom, so am I stuck forever now re upgrade? If not, what do I need to do to get on with reaching ICS status?

Thanks.

 

[Grey1001]

If that is right you're a couple of O/S behind. Here is a Youtube about returning to stock 2.3.6
Watch the whole thing and check the links below the vid, it's been a while so hopefully they're still alive.
Good Luck

How to Unroot/Unbrick Your Rooted Droid Razr Back to Android 2.3.6! - YouTube

After you're back to all stock it should update OTA.

 

[Podivin]

Check out this utility, I suspect it will get you back to stock so that you can then receive updates. Be sure to read and fully understand what all it does before you start just pushing buttons.

DROID RAZR Utility XT912 Jellybean -- Windows + Mac + Linux (All In One!) - Droid Razr Development [XT912] - DroidRzr.com

Edit: there's a newer version of the utility, use this one instead.
http://www.droidrzr.com/index.php/t...inux-all-in-one/page-7?hl=unbrick#entry228954