Samsung Galaxy S3 Official Android 4.2.2 update is not out but there are several ways and easy methods to get your smartphone upgraded to the latest version of Android OS. Not only it features Daydream, lock screen widget and new home screen modes, these ROMs are offering much more to customise and tweak your device according to your desire.

Android 4.2.2 Jelly Bean Leaked Firmware

Based on Android 4.2.2 test firmware ported from Samsung Galaxy S4 to Galaxy S3 and expected to be fully ready before the end of 2013. It features the following changes:

- New Galaxy S4 lock screen

- New screen modes from Galaxy S4

- Daydream from Jelly Bean

- Actionable notifications

- Additional features in the Notifications Centre

- New added features for Voice Control

- Updated S Voice from Galaxy S4

- New smart switch widget

Although possible to install on your Galaxy S3, it is still a pre-release firmware and not yet officially released by Samsung. The firmware works like any other official software and DOES NOT neither increases the binary counter nor changes the system state unlike with custom ROMs. It is easy to install using an Odin tool provided with the firmware package from SamMobile.

CyanogenMod 10.1 ROM

Android 4.2.2 firmware from CyanogenMod is still an official nightly build which may contain minor bugs on the device. However, CyanogenMod team always update their firmware regularly.

- Theme Support

- DSP Equaliser built-in for music & video players

- Expanded Quick Settings

- Bloat-free modifications

CM10.1 requires rooting your Galaxy S3 and installation of ClockworkMod recovery to flash the custom ROM. Check out the Official Galaxy S3 CM10.1 original thread.

SlimBean ROM Stable Build 7

Slim Bean developers offer unique interface and design compared to other custom ROMs for Galaxy S3. The current stable build 7 runs Android 4.2.2 Jelly Bean with the following official features:

- Dark Slim interface with colour inversion

- Notification drawer and lock screen shortcuts

- Customisable Quick Settings tiles

- Unique SlimPie launcher

- SlimBean automatic updater

Developers of SlimBean ROM also feature several Android 4.2.2 Jelly Bean custom ROMs for a wide variety of other Galaxy and Nexus devices. Check out the Official SlimBean ROM for Galaxy S3 for installation, themes and more stuff for your phone.

DovaROM from Paranoid Android

Another AOSP based ROM running Android 4.2.2 Jelly Bean is the DovaROM which features all-new interface and versatility on the lock screen. It contains many parts of Paranoid Android ROM with CyanogenMod wallpapers.

- Brand new Halo feature from Paranoid Android

- Original Galaxy S3 settings

- Pie Control launcher

- Dual boot kernel

- Long press Home key feature

According to their Web page, more features and updates are coming soon for the Galaxy S3 which also includes major bug fixes. Click here to check out the ROM's content and more.

Omega ROM Series

One of the most famous custom ROM which provides several modifications for themes, wallpapers and system. Omega also features an official Download Centre for everything you want added on your device.

- Android 4.2.2 based Camera, Gallery, keyboard swiping & emoji

- 23 toggle buttons

- Reboot menu for Recovery and Download

- Supported languages enabled

- Special Download Centre

- Modifications for themes, graphics, colour, animations and more

Omega ROM Series has tons of tweaking and customisation for your Galaxy S3 compared to most custom ROMs. Visit their Official XDA site to view everything you need to personalise your smartphone.