Samsung AT&T Galaxy S3 has just received the port of Android 4.2.1, the latest Android version.Now this build is basically a preview build aka alpha build with few of the features still not working and yes you may encounter few bugs as well,so in short this isn’t the stable Android 4.2.1.But its not bad either.And the brilliant developer “task650″ at XDA forums is working hard on it and we are sure the bugs will be fixed eventually and all the features would work perfectly.Now if you guys want to experience the LATEST Android 4.2.1 on your AT&T S3,then no worries we have come up with a noob proof detailed tutorial to Install / Update Android 4.2.1 Jelly Bean AT&T Galaxy S3 version.
Jelly Bean 4.2.1 Galaxy S3 AT&T
Before beginning with the procedure to Install Android 4.2.1 Jelly Bean AT&T Galaxy S3 you must know that once the procedure in the tutorial is followed your warranty stands void. The given method is risky and can cause your device to brick. It is therefore recommended that you follow the procedure carefully and perfectly. The processes that you carry out on your device are solely at your risk. We do not take responsibility for any damage to your device.
Bugs and Features which are not working (as of 14th December) :
- Camera doesn’t work
- Things aren’t perfect. But I can definitely use this as a daily driver as it is.
- In call echo is back. Other person hears the echo.
- Not all features have been added back yet.
- OTA is not setup to work for now.
Lets have a look at the essential Pre Requistes:
1.Firstly you must ensure that you have rooted and installed ClockWork mod (CWM) !
2.Minimum 60% of your phone battery must be charged.
3.Back up your phone data using Nandroid
To Backup apps, use this App ———> AppBak Download
To Backup Messages, use this App —> SMS Backup and Restore Download
4.Sync your contacts with gmail OR what you can do is import the contacts to the SD card wherein you will get a .vcf file which later on you can export to restore the contacts
5.Enable USB debugging mode(Settings –> Applications –> Development –> USB Debugging)
Following is the Detailed Method to Install Android 4.2.1 Jelly Bean AT&T Galaxy S3 Version:
Now firstly, you need to download the Android 4.2.1 Jelly Bean AT&T Galaxy S3 file.
You also need gapps file which will install the default apps like Google play,music,etc.Here is the Gapps for AT&T Galaxy S3 download linke –>
Gapps Android 4.2.1 Galaxy S3
After having done with downloading of the above mentioned files , you need to copy those files into you internal SD card.
Now you need to switch of your device AT&T Galaxy S3 . Now the first thing to do after this is boot into the CWM Recovery or TRP Recovery.Any one of it will do.We will see how we can go through when we are using CWM recovery.
Now to work around in the CWM recovery , you need to make use of the following keys :
To move Up/down use Volume Up /Volume Down Button respectively
To open a selected option, use Home/Power button.
Now there are series of steps you need to perform before you begin your actual process of installation of Jelly Bean AT&T Galaxy S3 version.
Select and open the ‘Backup and Restore’ menu from the main menu and do the Nandroid Backup(select yes) to restore your files and previous ROM if something goes wrong with the New ROM. Just to be safe.
In order to have practically no errors or bugs whatsoever , you need to wipe the data and factory reset your device.
So go to the ‘Wipe Data /factory reset’ and ‘Wipe Cache partition’ and then perform these processes
Now go to the Advanced menu , you will see a ‘Wipe Dalvik Cache’ menu , select and click on yes to do it.
Note : If you are on AOKP JB/CM10 then you may just wipe cache and dalvik cache and not do wipe data. But to be on a safer side and to ensure that practically no bugs should occur we basically “wipe data/factory reset”
Now to Install Android 4.2.1 Jelly Bean AT&T Galaxy S III Build, go to the ‘Install Zip from Sd Card’ menu , now select and open ‘“choose zip from sdcard’ menu , browse for the Android 4.2.1 Jelly Bean file and then select it and select yes to begin the process to install Jelly Bean 4.2.1 AT&T Galaxy S3 version.
Now,repeat the ‘Wipe data/factory reset’, ‘Wipe Dalvik Cache’ and “Wipe Cache partition” to. Now opt for “reboot system now“ option and wait for your phone to get Booted in the Android Jelly Bean AT&T Galaxy S3.Normally it will take 2-3 mins for the first boot.