A new firmware update with build version 19.1.1.C.0.56 has been certified by the PTCRB for the Sony Xperia T2 Ultra Dual (D5322, XM50h). This compares to the current firmware version for the handset which is running Android 4.4.2 KitKat with build 19.1.C.0.116. There is currently no update certified for the single SIM variants of the Xperia T2 Ultra, but we’ll keep you posted if that changes.
Thanks Levered!