Update Galaxy S3 to Android 4.2

Google release the latest system, android 4.2. Do you think it's a good news for many android users? In fact, to get android 4.2 on your android phone, lots of samsung galaxy s3 user are looking for the way to update galaxy s3 to android 4.2, if you're using galaxy s3, do you know how to upgrade galaxy s3 to jelly bean 4.2? Don't worry at all, here is provide you an instruction to the quick way to update galaxy s3 with android 4.2 just using Thunderbolt Custom ROM Firmware. Keeping reading this guide, you'll learn more from here.

Before Updating Galxy S3 to Android 4.2, you should do these:

Galaxy-S3-Jelly-Bean.jpg

Step 1: Backup your galaxy s3 data, because you have to wipe the system.

Step 2: Start to save the contacts, messages and call logs, and then backup the EFS.

Step 3: Download Thunderbolt Custom ROM, this is a beta android 4.1.2 update. To install this firmware on your phone, you need to root your galaxy s3.

Step 4: Restore the warranty but only update with an official firmware released by samsung,or downgrade galaxy s3 to the stock ROM, then the bootloader will be relocked and the rootaccess revoked.

Step 5: Install a custom recovery image for your galaxy s3.

Step 6: Make sure that you can access a computer using usb cable.

Step 7: Uninstall both galaxy s3 and pc.

Step 8: Check the battery status of your galaxy s3, if there is less than 50% power left go and charge it. The CM10 and AOKP jelly bean software will be stopped.

Step 9: Enable the usb debugging option on your handset.