New update firmware for most of the Sony smartphone market last year, with chipset NovaThor U8500 . Specifically, these are again Xperia P, U, go and Sun that after about two weeks receive a new minor update still based on ICS.

Sony Xperia P Update Firmware

 The firmware replaces the last (6.1.1.B.1.75) and most likely will be the last that the manufacturer will release with Android 4.0.4 before making the move to Jelly Bean , for now provided only on the Xperia P and Xperia go .

There were no major changes except the usual bug fixes and increased stability.

Source

Via