Update Galaxy S3 GT-I9300 to Android 4.2.2

Though Samsung yet to release Android 4.2.2 Jelly Bean firmware for Galaxy S3 (it is expected to be released in June), a leaked version of Android 4.2.2 ROM (I9300XXUFME3) for Galaxy S3 has been available for download. This Android 4.2.2 Jelly Bean firmware brings many nifty features of Galaxy S4 to S3 such as S4’s Camera features, Adapt Display, Driving mode, new S-Voice and more.

Official Android 4.2.2 Jelly Bean firmware for Galaxy S3 will be released in June, however, if you can’t wait for the official OTA update, just go ahead and get flash right now. Read below for details and installation instructions.

Note that, this leaked ROM is actually an unofficial release, which needs to be tested for bugs and performance. However, according to the leaked source Sammobile, it is pretty stable and working perfectly.

New features:
- New S4 Lockscreen with multiple widgets, two unlock effects (Ripple and Light)
- Adapt Display and Professional Photo (S4 feature)
- Daydream, Driving mode and Actionable notifications
- Completely revamped Settings UI (Tabbed interface like the S4)
- Addition of Voice controls (Let’s you control various parts of the phone using voice commands –   
  Galaxy S4 feature)
- Full screen Samsung apps
- New S-Voice (from S4)