Samsung is currently working at full steam to power the various devices with updates. The company was able to provide the popular Samsung Galaxy S3 with an update to Android 4.1.1 and the next version is already on the waiting list. In addition, however, was made some time ago in the prospect that the Samsung Galaxy S2 will receive an update on Jelly Bean and a first beta version of Android 4.1.2 which also surfaced on the internet.
For the users who can wait, there is certainly a good news. The developer community has already pounced on the leaked firmware and a corresponding custom ROM based on XXLSJ put Android 4.1.2 Jelly Bean on the legs. The ROM named Rainbox can boast with a rich feature set and includes some improvements to the original version of Samsung not exist. For example, the Flash player is installed, the stock launcher is available as an alternative and multi-window works fine. The full feature list is definitely worth a look.
So if you no longer want to wait for the official version is, at the colleagues of Teamandroid any information on installing the custom ROM and detailed instructions on Samsung Galaxy S2. Users who have not, however, extensively researching the issue should wait for the in-house update from Samsung.
As this is a PRE-RELEASE firmware so expect some minor bugs.
Android Version: 4.1.2 – JZO54K (Jelly Bean)
Build Date: 6th November 2012