Samsung Galaxy S3 to Stock ROM/UnRoot and Lock

To go into boot mode

To go to the recovery screen Hold Volume Up, Home and then Power Key

To go to the odin screen Hold Volume Down, Home and then Power Key

To reset the phone to stock rom.

You need these following files

Odin

KIES_HOME_I535VRBMB1_861013_REV09_user_low_ship.tar.md5

Verizon-SCH-I535-StockRecovery.tar

2. Flash Stock Recovery

I downloaded the stock rom image that you find above. that has all the files, like recovery.img and system.img etc.

There is another file that has just recovery.img. I just used the KIES_HOME_I535VRBMB1_861013_REV09_user_low_ship.tar.md5

1. Run ODIN. Do not touch any of the options. Only Auto Reboot should be checked.
2. Plug in your phone. The first COM rectangle should be yellow and ODIN should recognize the phone. If this is not the case and it’s not recognizing it then you need to get drivers for your phone.
3. Click “PDA” and select the stock recovery file you just downloaded.
4. Click Start.
5. When complete the top left will be green.
6. Now you have a stock recovery!!
7. Unplug your phone

3. Device Wipe

1. Go into your custom recovery by holding down Home, Volume up and Power buttons together.
2. When you see the samsung logo, let go and you’ll see it go into custom recovery.
3. Scroll to device wipe using the volume keys.
4. Press the home key to select the option, and then select yes. Once the device is wiped it will let you know.

IMPORTANT: If when rebooting, it hung for me 4GLTE animation forever. Couple of device wipes and reboots didn’t help me . I used the stockrecovery file from above. First untarred the file and got the recovery.img. Used the odin to as in Step 2. Repeated Step 3. I’m done