The Xperia T2 Ultra Dual started to receive the Android 5.1.1 Lollipop firmware update last week with build number 19.4.A.0.182. Now the same update is rolling for the single SIM version of the handset.
Build number 19.4.A.0.182 is currently rolling for the D5303 and D5306 LTE variants. We have included the FTF firmware files for both versions below. If you recently updated, let us know how you are getting on in the comments below.
Sony Xperia T2 Ultra LTE FTF firmware files – Android 5.1.1 Lollipop (19.4.A.0.182)