New 10.5.1.A.0.292 firmware has been certified for Xperia Z, ZL, ZR and Z Tablet on PTCRB today, probably bug fixing update over 10.5.A.0.233 firmware ( Android 4.4.4 update ). As 10.5.1.A.0.292 firmware is certified for all variants of Xperia Z, ZL, ZR, Z Tablet on PTCRB, we are expecting that it will be rolling soon.

Sony has already promised to bring Android 5.0 Lollipop update on Xperia Z, ZL, ZR and Z Tablet in early 2015 and it is good to see that Sony is still maintaining the firmware update line for early members of Xperia Z series.

Xperia Z 10.5.1.A.0.292 firmware

Below you can see the 10.5.1.A.0.292 firmware certification details for Xperia Z C6602, C6603, C6606 on PTCRB.

Xperia ZL 10.5.1.A.0.292 firmware

Below you can see the 10.5.1.A.0.292 firmware certification details for Xperia ZL C6502, C6503, C6506 PTCRB

Xperia ZR 10.5.1.A.0.292 firmware

Below you can see the 10.5.1.A.0.292 firmware certification details for Xperia ZR C5502, C5503 PTCRB

Xperia Z Tablet 10.5.1.A.0.292 firmware

Below you can see the 10.5.1.A.0.292 firmware certification details for Xperia Z Tablet SGP321 PTCRB

We will keep you updated once the firmware update starts rolling. Drop your comments below.