Sony's Xperia S has had its Jelly Bean update certified and should be getting the new version of the software in just a few days.

The update appeared on the North American PTCRB website, the wireless authentication forum, which is usually a good indicator of an Android update being ready.

Sony had announced a Jelly Bean update for the Xperia S more than six months ago, so the upgrade is long overdue. It will also be coming to the Xperia SL and Acro S, a Japan-only version of the phone.

As always, updates will be carried out over the air, although exactly when remains to be seen. The Xperia S was one of our favourite Android phones of 2012 and the Jelly Bean update should do a lot to speed up its software. 

Those waiting for the update should find it is just pushed out to their handsets when ready. Alternatively, they can check for updates in their device's settings menu.