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Root [CDMA] Unroot the evo3d

This may help

[HOW TO] Return to 100% stock 1.13.651.7 / ROM - Recovery - S-ON! (
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Hi all,
I am a beginner when it comes to rooting, so this adb thing is very confusing, i rooted by following a step by step tutorial which is what i need right now! I want the OTA update plus i want to be able to be ready for the ICS update, please can someone walk me through this without linking to XDA because that confuses me and there is not much there for EVO 3d gsm
Many thanks
James
 
The easiest way to unroot an Evo 3D is to flash a RUU. A RUU (stands for ROM Upgrade Utility) will flash the stock firmware and software. If you're on a Windows machine, it even has a program that will walk you through the process. You can find a listing of all RUUs here:

FileFactory Folder View - Shooter

Make sure you get the right RUU for your carrier. If you're unsure, let us know what carrier you're on and I can point to the RUU you need. Once you get the RUU, connect your phone to the computer and load into the bootloader (if you don't know how, download Quick Boot from the market). It'll say FASTBOOT USB in red near the middle of the screen. This is good, then run the RUU.exe. This will completely wipe out all of your data and restore your phone to stock conditions, but it'll still be S-OFF.

You should be able to run an OTA with an S-OFF but fully stock phone. If you want S-ON just to make sure, you'll have to do the following.

With the USB cable connected, open a command prompt window. If you need fastboot/adb, you can use Mini SDK found here: http://androidforums.com/faqs/443072-adb-guide-updated-12-05-2011-a.html

Code:
adb reboot bootloader

Then try:

Code:
fastboot oem writesecureflag 3

If that fails, try this:

Code:
fastboot oem lock

You should now be ready for OTAs.
 
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