I didn’t root my SGS2. I was waiting long for the Jelly Bean Android update for my SGS2 International. Today, finally, I plugged the phone to my computer and KIES informed me that there is a newer version of firmware for my phone. Of course, without waiting I installed it.
It took a little while to download the update data, but there was no problem with the installation. It went very smooth. Even my personal data and applications were on the device after installation.
So, for the first look at Jelly Bean I can tell: it is newer, better, much more beautiful. Look and feel was improved. I think that the device became more responsive for my interactions. The most awaited feature was the more rich notification area. I can now get rid of the power control widget, which took much space of my home screen. Also more configurable home screen and shortcuts on the lock screen are great features, which improve the usefulness of the device.