If you wish to update your AT&T Galaxy S3 smartphone with the Android 4.2.1, then this thing is possible with the AOKP Jelly Bean MR1 build 3 ROM. This is a monthly release of AOKP JB, and you will get tons of new features that will also increase the overall stability and presentation of your device.
AOKP JB MR1 build 3 ROM comes with three different User Interface mode selectors: Tablet, Phablet, and Samrtphone. Also, you will enjoy the following features:
- LastApp toggle.
- Transparency for all UI sections
- Car Home
- Quick Unlock and many others features.
Before to starting our how to install above specified ROM you need follow the guidelines listed below, to be sure you can successfully flash AOKP JB MR1 Build 3 ROM on AT&T Samsung Galaxy S3 smartphone.
- This guide and all instructions listed here are compatible and must be used only for the AT&T Samsung Galaxy S3s smartphone, don’t use this tutorial for any other device you can brick them.
- Your AT&T Samsung Galaxy S3 smartphone need to have the bootloader unlocked and the device must be rooted and running a CWM Recovery image. If you don’t follow these requires, then you don’t can flash any custom ROM’s on it.
- Create a NANDROID backup of the actual ROM installed on your device, this backup point is extremely good to have in case the flashing process doesn’t work well, and your smartphone doesn’t boot in with this new ROM installed on it.
- In the flashing process you will wipe the data and the factory reset for your device, in fact you’ll erase only the OS system partition, the internal SD card will remain intact. From the system partition, you’ll lose the SMS, call logs, the app installed on your smartphone and other data comparable with these. For backup your data you can use the following backup methods: Backup the SMS, Backup and restore, the Call Logs, Backup and Restore the APN Settings, Sync your contacts with your Gmail account. (when restore your contacts you’ll need to enter the same Gmail account in the new custom ROM).
- You need to enable the USB debugging option.
- Verify the smartphone’s battery power charge, it need to be more than 60%, this level will protect your smartphone to don’t’t take a forced shut down in the middle of the installation process.
- This guide is only for the advance Android users, if you’re novice is better to wait the official update.
- Reread all the steps and don’t skip any instructions or steps listed here.
- Note that all instructions and information from this post are only for educational and instructional propose and we cannot be blamed in case of this tutorial works wrong in the particular circumstances for your device, and you brick the smartphone or in case you lose any essential data from your device.
I think these are all prerequisites that you need to follow before to move to the flashing guide. Now you can move to guide and learn how to flash AOKP JB MR1 Build 3 ROM on AT&T Samsung Galaxy S3.
How to update AT&T Samsung Galaxy S3 with AOKP JB MR1 build ROM – guide.
- Firstly download the custom ROM from this link, and save it on your computer, don’t unzip it.
- Secondly download the Google Gapps for Android 4.2.1 SO from here, with this app you’ll be able to install all Google based apps. Save this archive in your computer without to unzip it.
- Connect your smartphone to your computer using the original USB cord.
- Move with copy and paste the AOKP JB MR1 build 3 ROM and the Google Gapps archives on your smartphone’s internal SDcard.
- When the files are copied disconnect the smartphone to the PC.
- Power off the Android smartphone.
- Boot your smartphone into Custom Recovery Mode, you can do this by pressing at the same time Volume Up, Home and Power, when the Custom Recovery menu is displayed the release the buttons.
- From the Custom Recovery menu, select ‘wipe data/ factory reset’ option and then confirm this action.
- Note: if in your device you running an official AOKP JB ROM then you can skip de above step.
- Now select ‘install zip from sdcard’ and after that ‘choose zip from sdcard’, search ‘AOKP JB MR1 build 3 ROM’ archive and confirm to install it.
- Now, choose once more ‘choose zip from sdcard’ and after that hit the Gapps archive and flash it.
- Go back to the main menu of the Custom Recovery mode and there select ‘reboot system now’.
- Now your smartphone will boot the first time in the new custom ROM, this first boot process shouldn’t during more than 5 minutes to complete.
- Join your Google account and now you can enjoy of the new custom ROM.
That’s all please let us know what is your opinion about this new custom ROM and what doo you think about the new features.
Congratulation, you successfully learnt how to flash the new AOKP JB MR1 build 3 ROM on your AT&T Galaxy S3 smartphone.
If this custom ROM isn’t installed correctly then you should repeat the complete guide to complete it. Make sure that you apply the ‘wipe data/ factory reset’ option from the step 6. If you’re having isseus understanding and applying this guide, please use our comment section and explain us where you have problems during the process, and we will try to find the best solution for you.