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How can I Update AT&T Samsung Galaxy S3 To Android?

You Can Update AT&T Samsung Galaxy S3 To Android 4.2.2

Form now on you can update your Samsung Galaxy S3 to Android easily. The Samsung Galaxy S3 was launched last year with Ice Cream Sandwich. Since then it has been updated to Jelly Bean and 4.2 has been announced,

What you need to do this task successfully?

1. Samsung Galaxy S3 version number SGH I 747.
2. CM 10.1 ROM.

3. USB Cable

Please follow this instruction info carefully to update your mobile.

Warning:  
Here……….
Note: The ROM is undergoing nightly updates at this moment, as so there could be some issues. These of course will be fixed with further updates. Don’t forget that this is not an official ROM and you do have to take great care if you are updating.
You do need to check that you have the international version and make sure the USB drivers are installed on your computer and USB debugging has been enabled on the device.
You should also backup your device and you will need ClockworkMod installed.
You will have to download the CM 10.1 ROM and at the same time Google apps.
To install Jelly Bean update on your handset follow the steps which are outlined below.
Step 1: Connect your Samsung Galaxy S3 to your computer via micro USB cable.
Step 2: Copy and paste the downloaded CM10.1 M3 Android 4.2.2 ROM to your Samsung Galaxy S3 (latest version available on official CyanogenMod website).
Step 3: Turn off your phone  and detach the USB cable with your Computer.
Step 4: Press and hold the Power + Volume Up + Home Button to enter ClockworkMod Recovery.
Step 5: In Recovery menu, you are always recommended to perform a full Wipe Data/Factory Reset to avoid crashing and ROM compatibility issues. It is an optional step if you upgrade from your previous ROM version. For CWM recovery, use Volume key to navigate in Recovery Mode. For TWRP, use touchscreen to navigate in Recovery Mode.
Step 6: Do Wipe Cache Partition – Select from the menu and select Yes to confirm.
Step 7: Go to advanced and do Wipe Dalvik Cache – Select from the menu and select Yes to confirm.
Step 8: From the main menu in Recovery, select the install zip from SD card, then select choose zip from internal SD card, browse to folder location and select the CM10.1 M3 Android 4.2.2 Jelly Bean ROM and click Yes to install.
Step 9: Back to main menu in Recovery, select the install zip from SD card, then select choose zip from internal SD card, browse to folder location and select the Google Apps file and click Yes to install.
Step 10: After the installation completes, go back to recovery main menu.
Step 11: Select reboot system now to reboot the Samsung Galaxy S3.
Step 12. For first boot up, it normally take the Samsung Galaxy S3 a longer time. Please wait patiently until your phone come back normal position.

And enjoy……. 

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