How to Update Xperia Active ST17i / ST17a to Android 4.1.1 Jelly Bean Custom ROM

Sony Ericsson Xperia Active ST17i / ST17a is one of the 2011 Android devices that will probably not get the ICS or even the Jelly Bean software update because they were low-end smartphones. But the best part is, the developers community is still up to keep those devices alive. You can easily install Android 4.1.1 CM10 Jelly Bean on Xperia Active ST17i / ST17a with the easy tutorial below.