Samsung is expected to deliver the official Android 4.1 update to its latest flagship smartphone - the Galaxy S3 - in fourth quarter this year. On the other hand, Samsung Galaxy S2 might never receive the official Jelly Bean update, if the latest rumors are to be believed. Fortunately, restless developers at XDA have ported the Jelly Bean OS to both these smartphones via custom ROMs, making the new OS available for the two smartphones months before Samsung can do so.

Faryaab, a renowned developer, has released his own Android 4.1 port for the international version of Samsung Galaxy S3. Port means that the ROM was originally meant to work on another smartphone. The UK based XDA developer made the Android 4.1 OTA update build for Galaxy Nexus to work on Samsung's latest flagship smartphone.

Since the ROM is in alpha stage, many features do not work properly. Important features like camera, Wi-Fi, Bluetooth and SD card does not work. In addition, there is no audio during voice calls.

We recommend you not to install the early build as you might brick your newly purchased smartphone while flashing the custom ROM. In case you want to give it a try, the ROM can be downloaded from here.

Meanwhile, another XDA developer going online by the name of LastStandingDroid also released a custom Jell Bean ROM for the dethroned king - Galaxy S2. Installation instructions and download links can be found on XDA forums.

Samsung Galaxy S2 users will also face the same problems with the early Jelly Bean build as Galaxy S3 users. Connectivity features are buggy with the custom ROM and most of them do not work at all.

Both the ROMS are intended for experimental purpose only. In case of daily usage, we recommend you not to install these custom ROMs as they are still in early stages. However, we can expect developers to polish the functionality and deliver a stable Android 4.1 build in upcoming weeks.